电脑经常死机原因

Adv Clause 1._______ you return the dictionary to the library immediately, you will be fined. A. If                      B. Until                    C. Provided            D. Unless 2.______ difficulties they may come across, they will help one another to get over them. A. However          B. Whatever            C. Whichever          D. Since 3._______ little we may like it, old age comes to most of us. A. So                    B. Since                    C. However                D. Despite 4._______ he had a knowledge of Spanish, he still attended the training course. A. But for            B. So long as          C. Although            D. In spite 5.It is almost impossible for me to meet her _______ she really comes to see me. A. for fear that        B. lest                    C. unless                  D. provided that 6.Women wearing the gowns were reported to look _______ they had just stepped out of bed. A. that                  B. as                      C. so that                  D. as though 7.We shall call on her as soon _______.   A. as she will come      B. as she shall come          C. as she comes                  D. she comes 8. Henry could not decline the invitation, _______he was not interested in joining the society.   A. for                    B. when                    C. supposing          D. though 9. The thief hid himself in the chimney _______ someone should catch him in the act.   A. when                  B. but that                C. lest                    D. where 10. Steel, coal and oil are to industry _______food is to man.     A. that                  B. so                      C. and                      D. as 11. _______in health, he persisted in doing the experiment.     A. As he was poor      B. Poor was he            C. Poor as he was            D. Poor he was though 12. I am sure you can do the work well ______.     A. if you applied yourself to it                B. if you apply yourself to it     C. if you apply yourself for it                  D. if you apply yourself it 13. He didn't break the bad news to his mother _______ that she might break down.     A. unless            B. for                      C. because                D. for fear 14. _______, someone rang me up.     A. While I left            B. While leaving              C. On leaving                  D. While I was leaving 15. The price of goods has kept rising _______the wages of tine workers remain the same.     A. whether          B. otherwise            C. consequently        D. whereas 16. Nanjing University of Science and Technology has sent many young scholars to study abroad _____ it might catch up with the best universities in China.     A. while            B. although            C. because                  D. so that 17. _______ the fine words he may say to your face, he hates you at heart.     A. After all        B. Even if                  C. For all                  D. Owing to 18. ______everything ready for the spring outing, it began to rain.     A. Getting          B. Having                  C. When I have got        D. When I had got 19. When  ______ where he came from, the boy cried instead of replying.     A. was asked        B. asking                  C. asked                  D. he being asking 20. The big waves might have drowned the child ______ fast to the saving-boat.     A. if he didn't hold      B. didn't he hold        C. had he held not          D. had he not held 21. ______ you should remain modest.     A. Whatever high your academic level is          B. However high your academic level is     C. Whichever is your high academic level        D. However your academic level is high 22. He warned his son not to go into the forest alone because he was fearful ______ some wild animals might hurt him.     A. if                    B. that                    C. whether                D. as 23. The farmer put up iron fences around the flower garden ______ neighbor's sheep should break in.     A. on condition that    B. now that                C. lest                          D. but 24. You can find the buildings of this style ______ you go in Italy.     A. whenever        B. whatever                C. whichever          D. wherever 25. ______he comes to Nanjing he will go to the Eastern Suburb for sightseeing.     A. By the time          B. Sometimes            C. Every time          D. At times 26. When a gun was pointing against your head, you should do______.     A. like you were told to      B. as to what told to    C. like what you were told to    D. as you were told to 27. We are lucky, for no sooner _____ home _____ it started to rain.     A. we returned; and    B. did we returned; when    C. after we returned; than      D. had we returned; than 28. The stick will serve my purpose _____ it is a little too long.     A. except                    B. except for                        C. except that                        D. besides 29. Metals, _____ can be defined as being ferrous (黑色的) or nonferrous (有色的) in make-up.     A. be they pure or alloy                                            B. are they pure or alloy              C. since they be pure or alloy                                  D. they be pure or alloy 30. “Did you remember to give Marie the money you owed her?”       “Yes. _____ I saw her, I remembered.”       A. As soon                B. Instantly                            C. Suddenly                            D. Momentarily