问题
选择题
人体中的有氧呼吸和无氧呼吸[ ]
A．都产生二氧化碳
B．不可以同时进行
C．产生的[H]去向不同
D．中间产物都相同
答案
答案：C
搜题请搜索小程序“爱下问搜题”
人体中的有氧呼吸和无氧呼吸[ ]
A．都产生二氧化碳
B．不可以同时进行
C．产生的[H]去向不同
D．中间产物都相同
答案：C
| 选词填空。根据短文内容，用方框中所给词的适当形式填空。(其中有一词多余) | |
__1__ the waiter a lot of trouble. First, she asked the waiter to turn on the air conditioner (空调) because she __2__ too hot. Then she asked him __3__ it off because she was too cold. This went on and on for __4__ half an hour. But the waiter was very kind and __5__ . He did everything the woman asked__6__ to do without getting angry.__7__ , someone else in the restaurant asked why the waiter didn't just throw the woman out. "Oh, I don't care." the waiter said, Smiling. "We don't even have an air conditioner." |