问题
选择题
现在，不少城市已开始使用“西气东输”工程送来的天然气。天然 气的主要成分是CH4，下图为四位同学在讨论化学式CH4的意义， 其中错误的是[ ]
A.
B.
C.
D.
答案
答案：D
搜题请搜索小程序“爱下问搜题”
现在，不少城市已开始使用“西气东输”工程送来的天然气。天然 气的主要成分是CH4，下图为四位同学在讨论化学式CH4的意义， 其中错误的是[ ]
A.
B.
C.
D.
答案：D
| 选择合适的选项填在横线上。 | |
| Jane Scott is fourteen years old and last year she began to study in a middle school. She likes dancing and singing and spends a lot of time on them. (1)_____________. She thinks it difficult to learn. Once she failed the math exam, and now she decides to give it up. (2)_____________. It was Sunday. Mr. Scott gave a call to his sister. She teaches math in another school. He hoped she would come and tell his daughter how to learn math. The woman came quickly and said, "You're a clever girl, Jane. (3)______________." "I'm afraid I can't, Aunt," said Jane. "I am not interested in math at all." "I don't think so," said the woman. "I was good at it when I was a girl. You can do more exercises and practice a math problem again until you make it. Well, here's a math problem. Think it over and practice it again and again, then you will work it out." "OK," said the girl, "Let me have a try." About an hour later Jane took the exercise book to her aunt and said," (4)____________." "Well done!" her aunt said happily, "What answer did you get?"
|