1.The road was _____ away during the storm last night.

A. flooded B.flowed C.washed D.over

2._____ many times I tell him, he always forgets to pass on phone messages.

A.Wherever B.Whatever C.However D.Whenever

3.This sort of music was very _____ in the 1960s.

A.preferred B.liked C.favourite D.popular

4.They'll never ______ to get here by six; the roads are quite busy today.

A.manage B.arrive C.succeed D.able

5.The instructor warned the students _______ swimming alone in the pool.

A.not B.from C.about D.out of

6.Sam was accused of stealing some _______ documents from the safe.

A.confidence B.confidential C.confiding D.confided

Topic :science and technology

1. Which invention do you like best?

2. When was it invented?

3. By whom was it invented?

4. What do you use that invention for?

Hãy chứng minh nhân dân ta có truyền thống đạo lí tốt đẹp: Uống nước nhớ nguồn.

Hãy tìm số nguyên x để A = 4/P(x) đạt GTNN và tìm GTNN đó

Cho hàm số y = f(x) = -ax

a) Biết đồ thị hàm số đi qua điểm M(-2;5). Hãy tìm a

b) Vẽ đồ thị hàm số vừa tìm được

c) Trong 3 điểm sau A(1;-2,5); B(3;7,5) C(-4;10) điểm nào thuộc đồ thị hàm số

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