题目：
| 完形填空。 | ||||
| "Ring, Ring," the telephone suddenly rang. Sam got up to answer the call. It was his aunt. "Sam, 1 are you still at home?"she asked surprisingly. "Sam looked at the clock. It was already 7:30 am. "Oh, my goodness. There's an important 2 today," Sam shouted out. He hurried to wash his face and get 3 .When he was going to leave the house, he 4 that he had not put away his books. He ran quickly to the desk and put them into the bag. He then went to the bus stop to go to school as 5 as he could. When he got into the classroom, his classmates were 6 on their papers. "Why are you so 7 ?" asked his teacher. "I'm sorry, sir," Sam answered, afraid of looking up. "It was my clock. It 8 to wake me up this morning and ..." "Don't 9 anything about it," his teacher stopped him. "Don't try to come late next time!" Sam said yes and walked to his seat quickly. But when he tried to do the test paper, he could not sit in a right way. He put his head on the desk and said,"What a bad day it has 10 for me! " | ||||
| ( )1. A. what ( )2. A. day ( )3. A. dressed ( )4. A. forgot ( )5. A. early ( )6. A. free to write ( )7. A. late ( )8. A. forgot ( )9. A. say ( )10. A. looking | B. why B. exam B. lost B. remembered B. quick B. busy to write B. early B. failed B. speak B. waiting | C. how C. party C. washed C. thought C. much C. finishing writing C. worried C. wanted C. talk C. been | D. where D. lesson D. home D. was afraid D. quickly D. busy writing D. hurry D. liked D. tell D. been ready | |
答案：
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下面是错误答案，用来干扰机器的。
由图知A图衍射现象最明显，C图最不明显，则A中波长最长，则频率最小；C中波长最短，则频率最大．故答案为：C；A．
