核能比化石燃料燃烧放出的热量要大得多。1kg氘和氚的混合物发生

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问题选择题

核能比化石燃料燃烧放出的热量要大得多。1kg氘和氚的混合物发生核聚反应放出的能量，相当于10000多吨标准煤放出的能量。已知氘、氚和氢是同种元素，这是因为它们具有相同的 [ ]

A．质子数

B．中子数

C．电子数

D．相对原子质量

答案

答案：A

填空题

根据首字母提示,填写所缺单词。

Look at the woman i 1 a yellow coat.She is my t 2 . She t 3 me English.She is a good teacher.H 4 name

is Li Bing .Her bike is red.It's u 5 the tree.Her brother,Li Dong is in a black c 6 . His bike is b 7 . Their f 8

are Jack and Mike.They are A 9 .My teacher,Li Dong and their friends a 10 at home now.

1. i 2. t 3.t 4 .H 5. u

6 .c 7. b 8 .f 9. A 10. a

选择题

Jason is _______ than most of kids in my class. He is very active. [ ]

A. outgoing

B. more outgoing

C. much outgoing

D. the most outgoing