26. 代码优化的主要目标是( ) ① 如何提高目标程序的运行速度 ② 如何减少目标程序运行所需的空间 ③ 如何协调①和② ④ 如何使生成的目标代码尽可能短 A. ①② B. ①②③ C. ①②④ D. ①②③④ ...

13. 一个LR（1）文法合并同心集后若不是LALR（1）文法： A. 则可能存在移进/归约冲突 B. 则可能存在归约/归约冲突 C. 则可能存在移进/归约冲突和归约/归约冲突 D. 不存在冲突 ...

6. It is hard to predict how science is going to turn out, and if it is really good science it is impossible to predict. If the things to be found are actually new, they are by definition unknown in advance. You cannot ...

2. The relationship between the home and market economies has gone through two distinct stages. Early industrialization began the process of transferring some production processes (e.g. clothmaking, sewing and canning foods) from the home ...

3. Production of the new handbags has been _______ up to meet the increasing demand. A. pulled B. played C. turned D. stepped ...

26. As a rule, Dad is generous, but as a businessman, he usually drives a hard __________. A. negotiation B. deal C. bargain D. agreement ...

8. We could have provided that manual laborer with almost any object of his desire upon his retirement, but he ______ asked for an oil painting by Winston Churchill. A. mainly B. solely C. specifically D. decidedly ...

30. .Bob: Hi, Ted. How have you been?Ted: _______(initiating a topic) A. Pretty good. Tell you what, I’ve just returned from Taiwan. B. Hi, Bob. Fancy meeting you here. C. Just fine. How are you doing these days? D. Well, I&rsq...

23. I’m not sure whether this kind of socket is available in this hardware shop. A. expensive B. acceptable C. useful D. obtainable ...

11. Her necklace is very beautiful. It’s made of genuinepearls. A. precious B. real C. rare D. expensive ...