人们处于紧张时，神经系统会发送信号，促使肾上腺分泌量增加，而_爱下问搜题

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问题单项选择题

人们处于紧张时，神经系统会发送信号，促使肾上腺分泌量增加，而使心跳加快、血管收缩、暂时性的血压（）。

A、暴涨

B、升高

C、变小

答案

参考答案：B

完形填空

One day a rich man wanted to sell some goods in another town and buy some things there. He to take ten servants(仆人) with him. They would carry the goods and also some to eat on their way. The rich man said to of his servants, "Ali, you are the and the weakest one. You may the lightest load(担子) to carry." Ali thanked him and chose the load. It was their food-bread. The rich man said, "How foolish you are! That's the heaviest one. " But Ali was to lift it up. And so they set off. Four hours , they stopped for a rest. They all some of the bread. Then there was bread for Ali to carry. Each time they ate some, the load became smaller and lighter. At last the clever servant had nothing to carry.

单项选择题

下列哪个保留字可以定义常值变量，说明这个变量赋值后永不改变

A． a=5：b=8　Do　　Print"*"　　a=a+l　Loop While a＜b

B． a=5：b=8　Do　　Print"*"　　a=a+l　Loop Until a＜b

C．a=5：b=8　　Do Until a-b　　　Print"*"　　　b=b+1　　Loop

D． a=5：b=8　Do Until a＞b　　Print"*"a=a+1　Loop