1在直角坐標(biāo)系中，直線的傾斜角是

A．　　　　　　　　　　　　 B．　　　　　　　　　　　　 C．　　　　　　　　　　　 D．

2.直線l經(jīng)過A(2，1)、B(1，m²)(m∈R)兩點(diǎn)，那么直線l的傾斜角的取值范圍是

A．　　　 B． 　 C．　　　　 D．

11. As soon as we went ________, our ship left port.

A. above board　　　　 B.across the board　　　 C.on board　　　 D.by the board.

10.He is always the first ___________and the last ____________

A.to come ;to leave　　ing ;to leave　　　ing ,leaving　e; leave

9. Though it was the first time __________there, I got used to the climate very well.

A. that I have been there B.which I had been　　　 C.I had been　　　 D.I have been

8.________his proposal, there are pros and cons.

A. Concerning　　　　cerned　　　　　cern　　　　 D.to concern

7. At the party there was food ___________.

A. in abundance　　　 B .with abundance　 C. of abundance　　 D. at abundance

6. My opinion is parallel ________yours.

A. with　　　　　　　 B .to　　　　　　 C. for　　　　　　 D .of

5. He was ___________in business.

A. success　　　　　　 B. succeed　　　　 C. a success　　　 D. succeeded

4. In the past, ice ______________food.

A. used to keep　　　　　　　　　　　　 B. used to be used for keeping

C. was used to keeping　　　　　　　　　 D. used to be used to keeping

3. Who will succeed _____________his property after his death?

A.in　　　　　　　　 B.at　　　　　　 C.to　　　　　　　 D.from