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问题 选择题

从1978年到2007年，我国进出口总额从206亿美元提高到21737亿美元，外汇储备跃居世界第一，对外投资大幅增长。这说明我国

①对外开放水平不断提高

②对外开放是我国立国之本

③对外开放是社会主义的本质

④为世界经济发展作出了重大贡献

A．①③

B．②④

C．①④

D．②③

答案

答案：C

考查分析概括能力。四项基本原则是我国的立国之本；社会主义的本质，是解放生产力、发展生产力、消灭剥削、消除两极分化、最终达到共同富裕。故排除②③。故选C。

单项选择题

I was a single parent of four small children, working at a low paid job. Money was always tight, but we had a (1) over our heads, food on the table, clothes on our backs, and if not a lot, always (2) . Not knowing we were poor, my kids just thought I was (3) . I’ve always been glad about that.
It was Christmas time, and although there wasn’t (4) for a lot of gifts, we planned to celebrate with a family party. But the big (5) for the kids was the fun of Christmas (6) .
They planned weeks ahead of time, asking (7) what they wanted for Christmas. Fortunately, I had saved MYM120 for (8) to share by all five of us.
The big (9) arrived. I gave each kid a twenty-dollar bill and (10) them to look for gifts of about four dollars each. Then everyone scattered. We had two hours to shop; then we would (11) back at the "Santa’s Workshop"
Driving home, everyone was in high Christmas spirits, (12) my younger daughter, Ginger, who was unusually (13) She had only one small, flat bag with a few candies—fiftycent candies I was so angry, but I didn’t say anything (14) we got home. I called her into my bedroom and closed the door, (15) to be angry again. This is what she told me.
"I was looking (16) thinking of what to buy, and I (17) to read the little cards on the ’Giving Trees’. One was for a little girl, four years old, and all she (18) for Christmas was a doll. So I took the card off the tree and (19) the doll for her. We have so much and she doesn’t have anything. "
I never felt so (20) as I did that day.

二、完形填空

A．out

B．over

C．forward

D．around
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单项选择题

阿司匹林抗血小板的机制是（）

A.抑制凝血酶生成

B.抑制环氧化酶

C.拮抗血小板Ⅱb/Ⅲa受体

D.减少PGI2生成

E.抑制血小板的生成
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