Trong 1 tế bào bình thường có mấy loại nhiễm sắc thể

1.   Young generation likes wearing jeans and jeans were never out of fashion. 

                    A                             B                C                      D 

2.  They have given me three bicycles since I start riding to school. 

             A                                          B        C      D 

3.   This is the first time he drinks coffee in the evening. 

       A        B                          C                          D 

4.   I am very  excited with the trip, so I  cannot sleep. 

A              B        C                         D 

5.   John  has broken several glasses since I know him. 

                         A           B                       C        D 

6. Tomorrow I am going to a trip to Ha Long Bay. 

           A                B         C          D 

7. It was very kind of you showing me so much of the city. 

A                    B            C                  D 

8. Ao dai, the traditional Vietnamese dress, changed a lot for centuries.  

                 A       B                                              C                          D 

9.  Last weekend we went to see a movie calling “Ghost and monsters”. 

      A                            B         C                    D 

 10. In the 1970s more and more people preferred to wear modern clothing in work                A                                                            B           C                                  D 

A1

1.    Tom did his test successfully last week.

Tom’s _____________________________________________________.

2.    You mustn’t use this machine after 5.30 pm.
This machine _______________________________________________.

3.    They made jeans cloth completely from cotton in the 18^th century.
Jeans cloth_________________________________________________.

4.    Every year, millions of people visit Hue, the world heritage of Vietnam.

Hue ______________________________________________________.

5.    All the 9^th graders will take the English test next week.
The English test  ____________________________________________.

6.    We should brush our teeth carefully after meals.

      Our _______________________________________________________.

7.    Everyone must observe traffic rules strictly.

The traffic __________________________________________________.

1.    Her father no longer smokes cigarettes.
Her father used _____________________________________________.

2.    Linda is no longer late in class.

Linda used_________________________________________________.

3.    He often fed the pigs when he was young.

      He used ___________________________________________________.

EXERCISE A2

1.    As a boy, my father often rode a bike to the countryside.
My father used ______________________________________________.

2.    This city had old buildings, but none can be found nowadays.

There used _________________________________________________.

3.    Speaking Malay feels strange to me.

      I am not used _______________________________________________.

4.    How long has it been since you left school?

When _____________________________________________________.

5.    How long have you written that story?

When _____________________________________________________.

6.    We last saw our cousin Tom two months ago.

      We haven't _________________________________________________.

7.    Helen started to study French in 1995.

      Helen has __________________________________________________.

8.    It has been three years since I saw Ms. Lee.

      I haven’t ___________________________________________________.

9.    My father stopped smoking two years ago.
My father hasn’t _____________________________________________.

10. Nobody has seen Tom for a week.
The last time Tom ____________________________________________.

Câu 1.             Giao tử cái ở động vật gọi là?

Câu 2.             Giao tử đực ở động vật gọi là?

Câu 3.             Liệt kê 2 điểm giống nhau và 2 điểm khác nhau giữa quá trình phát sinh giao tử đực và cái ở động vật.

-         Giống nhau:

-         Khác nhau:

Câu 8: Hòa tan 2,3 gam kim loại natri vào 97,8 gam nước. Sau phản ứng thu đươc dung dịch bazơ và khí hiđro. 

 a. Viết PTHH xảy ra.  

b. Tính thể tích khí hiđro thoát ra.  

c. Tính nồng độ % của dung dịch bazơ thu được. 

VIII. WRITING

A. Rewrite the sentences without changing the meaning.

EXERCISE A1

1. What a pity I live far from my school.

I wish ______________________________________________________.

2. I’m sorry that I don’t have time to help you.

I wish ______________________________________________________.

3. What a pity! He misses the train.

I wish ______________________________________________________.

4. We are sorry. You are not here with us.

We wish ____________________________________________________.

5. My friends often go on a camping trip without me.

I wish ______________________________________________________.

Your friend, Hannah, wants to know about your last holiday. She wants to know where you went and what you did. Write an email to your friend. In your email you should:

• say where you went.

• say what you did there.

• ask your friend about his/her last holiday.

Write 150-175 words 

Cho biết thân cao là tính trạng trội hoàn toàn với thân thấp. Cho thân cao thuần chủng lai với thân thấp được F1. F1 tự thụ được F2. biện luận và viết sơ đồ lai từ P đến F2.