普查办公室应当对普查实施中的每个环节实行（）和（）。 A.质量_爱下问搜题

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问题多项选择题

普查办公室应当对普查实施中的每个环节实行（）和（）。

A.质量控制

B.检查验收

C.严格管理

D.监督检查

答案

参考答案：A, B

填空题

设F₁、F₂为椭圆16x²+25y²=400的焦点，P为椭圆上的一点，则△PF₁F₂的周长是______，△PF₁F₂的面积的最大值是______．

完形填空

As she walked round the large shop, Edith realized how difficult it was to choose a suitable Christmas 16 for her father.
She 17 that he were as easy to please as her mother, who was 18 satisfied with perfume(香水). 19, shopping at this time of the year was not a most 20 job. People 21 on your feet, pushed you with their shoulders and almost 22 you over in their hurry in order to 23 something cheap ahead of you.
Partly to have a rest, Edith paused in front of a counter, where some beautiful ties were on 24. "They are 25 silk," the shop assistant told her with a smile trying to 26 her to buy one. But Edith knew from past 27 that her choice of ties hardly ever pleased her father.
She moved on slowly and then, quite by chance, 28 where a small crowd of men had gathered round a counter. She found some fine pipes on sale and the 29 were very beautiful. Edith did not hesitate for long, although her father 30 smoked a pipe once in a while, she believed this was 31 to please him.
When she got home, with her small but 32 present hidden in her handbag, it was time for supper and her parents were already 33 table. Her mother was in great 34. "Your father has at last decided to stop smoking," she told her daughter happily. Edith was so 35 that she could not say a single word.

B．Fortunately

D．satisfactory

B．well-chosen

D．disappointment