Ăng ten sử dụng một mạch dao động  L C 1  lí tưởng thu được sóng điện từ có bước sóng  λ 1 = 300 m . Nếu mắc thêm tụ điện  C 2  nối tiếp tụ điện  C 1  thì ăng ten thu được sóng điện từ có bước sóng  λ = 240 m . Nếu chỉ dùng tụ điện  C 2  thì ăng ten thu được sóng điện từ có bước sóng

A. 700 m

B. 600 m

C. 500 m

D. 400 m

They agree that  a wife should maintain her _________ and appearance after marriage.

A. beautiful

B. beautifully

C. beauty

D. beautify

Chứng minh rằng:  11 10   –   1 chia hết cho 100

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

It’s no use reading that book.

A. You should read that book.

B. That book has not been used.

C. That book is not worth reading.

D. I have used the book for a long time

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

He revealed his intentions of leaving the company to the manager during the office dinner party.

A. concealed

B. disclosed

C. misled

D. influenced

Mark the letter A, B C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

Those clothes are inappropriate for this morning.

A. improper

B.  attractive

C. suitable

D. available

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

Try to eliminate fatty foods from your diet.

A. limit

B. move

C. add

D. get rid of

Đun nóng este etyl axetat (CH₃COOC₂H₅) với một lượng vừa đủ dung dịch NaOH, sản phẩm thu được là

A.  C 2 H 5 COONa và  CH 3 OH .

B.  CH 3 COONa  và  C 2 H 5 OH .

C.  CH 3 COONa  và  CH 3 OH .

D.  CH 3 COONa và  C 2 H 5 ONa .

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.

          When you read something in a foreign language, you frequently come across words you do not fully understand. Sometimes you (31) ______ the meaning in a dictionary and sometimes you guess. The strategy you adopt depends very much upon the degree of accuracy you require and the time at your disposal.
          If you are the sort of person who tends to turn to the dictionary frequently, it is (32) ______ remembering that every dictionary has its limitations. Each definition is only an approximation and one builds up an accurate picture of the meaning of a word only after meeting it in a (33) ______ of contexts. It is also important to recognize the special dangers of dictionaries that translate from English into your native language and vice versa. If you must use a dictionary, it is usually far safer to consult an English-English dictionary.
          In most exams you are not permitted to use a dictionary. (34) ______ you are allowed to use one, it is very time-consuming to look up words, and time in exams is usually limited. You are, therefore, forced to guess the meaning of unfamiliar words. When you come across unknown words in an exam text, it is very easy to panic. However, if you develop efficient techniques for guessing the meaning, you will overcome a number of possible problems and help yourself to understand far more of the text than you at first thought likely.
          Two strategies which may help you guess the meaning of a word are: using contextual clues, both within the sentence and outside, and making use of clues (35) ______ from the formation of the word

Điền ô số 31

A. control

B. inspect

C. check

D. examine