Tại sao ở các cơ thể đa bội thường có hiện tượng tăng kích thước tế bào, cơ quan, tăng sức chống chịu?

 A.

Do sư tăng gấp bôi số lượng NST, ADN trong tế bào

 B.

Do sự tăng kích thước các bào quan trong tế bào

 C.

Do sự giảm số lượng NST, ADN trong tế bào

 D.

Do sư tăng số lượng các bào quan trong tế bào

Tại sao ADN được xem là cơ sở vật chất di truyền ở cấp phân tử?

 A.

Số lượng và khối lượng ADN không thay đổi qua giảm phân và thụ tinh

 B.

ADN có trình tự các cặp nucleotit đặc trưng cho loài

 C.

ADN được cấu tạo từ các đơn phân là các nuleotit

 D.

ADN có khả năng tự nhân đôi theo đúng khuôn mẫu

Thể (2n - 1) là hiện tượng một cặp NST nào đó trong bộ NST lưỡng bội

 A.

có thêm một NST

 B.

bị mất một NST

 C.

bị mất 2 NST

 D.

có thêm hai NST

Các nucleotit giữa 2 mạch của phân tử ADN liên kết với nhau bằng các liên kết?

 A.

Liên kết cộng hóa trị

 B.

Liên kết photphodiete

 C.

Liên kết peptit

 D.

Liên kết hidro

Quá trình sao chép phân tử ADN diễn ra theo những nguyên tắc nào?

 A.

Nguyên tắc bổ sung, nguyên tắc khuôn mẫu 

 B.

Nguyên tắc bổ sung, nguyên tắc bán bảo toàn, nguyên tắc khuôn mẫu

 C.

Nguyên tắc bổ sung, nguyên tắc bán bảo toàn

 D.

Nguyên tắc bán bản toàn, nguyên tắc khuôn mẫu

V. Read the text carefully then decide whether the statements are true (T) or false
(F) and choose the correct answers.
Spending your free time on the Internet can be fun. You can chat, share photos with
friends, and play online games. But some people are addicted to the Internet. They just
can’t turn it off.
Being online for many hours at a time does not mean you have a problem. The Internet
is very useful. Online, you can pay your bills, buy clothes, and read the news. There are
many good reasons to spend time online. However, people with an Internet addiction are
online too much. They don’t spend time with their friends and family. Instead, they spend
their time chatting with their Internet friends, people they have never met in real life.
Some also play online games all day or night. Some people with Internet addictions even
leave their jobs so they can spend even more time online! People with Internet addictions
don’t just go online to shop, have fun, or do work. People who have this problem often go
online because they want to escape the stress and problems in their lives. Many internet
addicts stop caring about their real lives, and focus only on their online lives.
One way Internet addicts can get help is by using special software. This software
controls how much time someone can spend online. It tells the computer to turn off the
internet after a certain amount time. This helps people focus on real life. The software’s
goal is to teach people to use the Internet for good reasons and not just as an escape.
1. People with Internet addiction spend most of their free time on the Internet.
2. Paying bills online is a useful way to use the Internet.
3. Internet addiction causes problems in one’s daily life.
4. Most Internet addicts play online games all day or night.
5. Using special software is a way of helping people stop their Internet addiction.
6. What is the main idea of the article?
A. People should not spend time on the Internet. B. The Internet is very good for
people.
C. Spending too much time online is not good. D. Families should use the Internet
together.
7. Which is NOT a problem for people with Internet addiction?
A. They stop spending time with their family. B. They learn to type very fast.
C. They might lose their jobs. D. They stop caring about their real
lives.
8. According to the passage, a person is most likely to become an Internet addict if.
A. their life is stressful and has problems B. their job is boring
C. they enjoy online gaming D. they have a lot of online friends

IV. Complete the sentences using the words given. You can change the order of the
words
1. We /suggest/that/the government/limit/the number/visitors/daily
2. I /suggest/that/control/the deforestation
3. I / suggest/that/reduce/smoke/exhaust fumes
4. I /suggest/that/raise/money/charity
5. I /suggest/that/put/valuable/things/high-security/places

III. Write sentences about Cham towers in Binh Dinh, using the imperative passive
with the verbs given in brackets.
1. The ancient Champa dynasties built many elaborate temples and shrines. (believe)
2. The Cham towers in Binh Dinh province are the biggest in Southeast Asia. (claim)
3. The Cham towers are located in the Do Ban Citadel. (think)
4. The Binh Dinh towers are a harmonious combination of architectural art from the
Champa and Khmer cultures. (consider)
5. The three magnificent Duong Long Towers were built during the 12th and 13th centuries
in Toy Son district. (say)

II. Complete the second sentence with the same meaning, using “suggest + V-ing/
clause with should".
1."I will give you the answer by the end of this week.” Tom said to Mi.
=> Tom suggested _______________
2.“Why don’t you ask your parents for advice, Nick?” said Phong.
=> Phong suggested that ______________.
3.“Why don’t you get your hair cut, Nick?” said his mother.
=> Nick’s mother suggested that __________.
4.The doctor said, “You really ought to rest for a few days, Veronica."
=> The doctor suggested that ______________.
5.“You’d better apologize to your teacher for being late." said Phong’s mother.
=> Phong’s mother suggested that ___________.

I. Choose the best answer A, B, C or D to complete the sentences.
1. ___________ is a castle on high ground in or near a city, where people could go when
the city was being attacked.
A. cathedral B. monument C. centre D. citadel
2. The Thang Long Imperial Citadel was the of political power for nearly seven
centuries without interruption.
A. middle B. point C. system D. centre
3. In 1978, the south and north Cat Tien parks were put the State's protection.
A. of B. under C. above D. with
4. The public suggested that the factories with waste treatment system.
A. would equip B. would be equipped C. should equipD. should be
equipped
5. The local government suggested a road through the Nam Cat Tien National
Park.
A. build B.to build C. building D. being built
6. Hundreds of thousands of __________ travel to Perfume Pagoda to pray for happiness
and prosperity in the coming year.
A. passengers B. holiday-makers C. pilgrimages D. pilgrims
7. The pagoda is in a beautiful ___________, close to the sea.
A. spaces B. setting C. tower D. set
8. The local government is introducing tougher ___________ to preserve historical sites.
A. measures B. actions C. plans D. steps