Các câu hỏi tương tự
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following question.______ number of boys were swimming in the lake, but I didn’t know ______ exact number of them. A. A/the B. A/an C. The/the D. The/an
Đọc tiếp
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following question.
______ number of boys were swimming in the lake, but I didn’t know ______ exact number of them.
A. A/the
B. A/an
C. The/the
D. The/an
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. ______ number of boys were swimming in the lake, but I didn’t know ______ exact number of them. A. A/the B. The/an C. The/the D. A/an
Đọc tiếp
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
______ number of boys were swimming in the lake, but I didn’t know ______ exact number of them.
A. A/the
B. The/an
C. The/the
D. A/an
______ number of boys were swimming in the lake, but I didn’t know ______ exact number of them
A. A/the
B. The/an
C. The/the
D. A/an
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. I haven’t had an accident but I’ve had a number of _______ shaves. A. narrow B. near C. close D. tiny
Đọc tiếp
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
I haven’t had an accident but I’ve had a number of _______ shaves.
A. narrow
B. near
C. close
D. tiny
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in man...
Đọc tiếp
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in manmade particle accelerators and perhaps in extreme stellar events like supernovas. The structure of an atom can best be described as a small solar system, with the neutrons at the center and the electrons circling them in various orbits, just as the planets circle the sun. In reality, the structure of an atom is far more complex, because the laws of physics are fundamentally different at the atomic level than at the level of the observable word. The true nature of atomic structure can only be expressed accurately through complex mathematical formulas. This explanation, however, is of little use to most average people.
Protons and neutrons have nearly equal mass and size, but protons carry a positive electrical charge, while neutrons carry no charge at all. Protons and neutrons are bound together by the strong nuclear force, one of the four basic forces in the universe. Protons and neutrons give atoms some of their most basic properties. Elements are defined by two numbers: their atomic number, which is equal to the number of protons they have, and their atomic weight, which is equal to total number of their neutrons and protons. In most lighter atoms, the number of neutrons and protons is equal, and the element is stable. In heavier atoms, however, there are more neutrons than protons, and the element is unstable, eventually losing neutrons through radioactive decay until a neutral state is reached.
According to paragraph 2, an atom's atomic number is determined by __________.
A. the sum of its protons and electrons
B. the difference in the mass of its neutrons and protons
C. the strength of the bond between its protons and neutrons
D. the total number of protons it has
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in man...
Đọc tiếp
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in manmade particle accelerators and perhaps in extreme stellar events like supernovas. The structure of an atom can best be described as a small solar system, with the neutrons at the center and the electrons circling them in various orbits, just as the planets circle the sun. In reality, the structure of an atom is far more complex, because the laws of physics are fundamentally different at the atomic level than at the level of the observable word. The true nature of atomic structure can only be expressed accurately through complex mathematical formulas. This explanation, however, is of little use to most average people.
Protons and neutrons have nearly equal mass and size, but protons carry a positive electrical charge, while neutrons carry no charge at all. Protons and neutrons are bound together by the strong nuclear force, one of the four basic forces in the universe. Protons and neutrons give atoms some of their most basic properties. Elements are defined by two numbers: their atomic number, which is equal to the number of protons they have, and their atomic weight, which is equal to total number of their neutrons and protons. In most lighter atoms, the number of neutrons and protons is equal, and the element is stable. In heavier atoms, however, there are more neutrons than protons, and the element is unstable, eventually losing neutrons through radioactive decay until a neutral state is reached.
In paragraph 1, why does the author compare the structure of an atom to a solar system?
A. To provide an explanation of atomic structure that will be easily understood
B. To show the influence of atomic structure on the world at the observable level
C. To show that the complex mathematical formulas used to explain atomic structure are inaccurate
D. To contrast the size of atoms with the size of objects at the observable level
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in man...
Đọc tiếp
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in manmade particle accelerators and perhaps in extreme stellar events like supernovas. The structure of an atom can best be described as a small solar system, with the neutrons at the center and the electrons circling them in various orbits, just as the planets circle the sun. In reality, the structure of an atom is far more complex, because the laws of physics are fundamentally different at the atomic level than at the level of the observable word. The true nature of atomic structure can only be expressed accurately through complex mathematical formulas. This explanation, however, is of little use to most average people.
Protons and neutrons have nearly equal mass and size, but protons carry a positive electrical charge, while neutrons carry no charge at all. Protons and neutrons are bound together by the strong nuclear force, one of the four basic forces in the universe. Protons and neutrons give atoms some of their most basic properties. Elements are defined by two numbers: their atomic number, which is equal to the number of protons they have, and their atomic weight, which is equal to total number of their neutrons and protons. In most lighter atoms, the number of neutrons and protons is equal, and the element is stable. In heavier atoms, however, there are more neutrons than protons, and the element is unstable, eventually losing neutrons through radioactive decay until a neutral state is reached
The word "stable" in bold in paragraph 2 is closest in meaning to _____.
A. neutral
B. unchanging
C. equal
D. heavy
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions We interviewed a number of candidates but none of them _____________ us. A. impression B. impressive C. impressively D. impressed
Đọc tiếp
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
We interviewed a number of candidates but none of them _____________ us.
A. impression
B. impressive
C. impressively
D. impressed
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.Since the first Paralympic Games in Rome in 1960, swimming has been one of its main sports. The thrill of competition aside, swimming offers many benefits including strengthening the cardiovascular systems and the major muscle groups of both the upper and lower body. It also develops flexibility in the muscles and joints as the swimmer performs a wide range of motion against the waters resi...
Đọc tiếp
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.
Since the first Paralympic Games in Rome in 1960, swimming has been one of its main sports. The thrill of competition aside, swimming offers many benefits including strengthening the cardiovascular systems and the major muscle groups of both the upper and lower body. It also develops flexibility in the muscles and joints as the swimmer performs a wide range of motion against the water's resistance. It is an activity that keeps your heart rate up but takes some of the stress that is common in impact sports off the body; injuries don't occur as easily. The water's buoyancy evenly distributes and supports the weight of the body; there is no danger of falling, and there are no impact forces on the
residual limb. Swimmers who have disabilities endorse the sport because it gives them a sense of freedom. They don't have to rely on any supportive device, such as a wheelchair, to assist them. They are independent. They are only judged on their times and whether those times are dropping. “Water is one of the big equalizers,” said Queenie Nichols, long-time Paralympic swim coach. "One of the phrases I heard since I got involved in this is that we are all equal in the water and that is really true. Athletes with disabilities, from below-knee amputations to severe quads, can compete and compete successfully.”
While it is not essential to begin swimming at an early age to become an elite athlete, Nichols believes that the sooner an individual becomes comfortable in the water, the better. "I think starting at about 5 years old is a good age to get children involved, in the pool at least once a week. Keep it fun for them until they show an interest in growing with a Club," she said.
“Most clubs that belong to USA Swimming or YMCAs offer coaching and training at the appropriate level for age and experience,” Nichols said. "We suggest aspiring athletes participate with an able-bodied club at first because of the greater number of individuals they will compete with."
Typically, swimmers in this introductory/ foundation phase, usually aged 5 to 8 or 9, remain there for about 5 years before transitioning to the next level, which includes more advanced drills and stroke efficiency. Athletes with disabilities who join swimming clubs benefit from better sport-specific coaching, more rigorous training, more competition in practice, and higher expectations than they are likely to receive in other settings. Other benefits include socialization opportunities, greater independence in activities of daily living, and improved ability to cope with limitations imposed by disabilities.
As mentioned in paragraph 4, Athletes with disabilities who join swimming
clubs can benefit _____.
A. better than the ordinary people
B. worse than the ordinary people
C. better than the disabled athletes with talented ability
D. better than the disabled athletes in other sports