钴-60源γ衰变时释放出的γ射线有（） A.1种能量 B.2种能量 C.3种能量 D

The meat is ___ dear and eating ___ meat is bad for your health.

A．too much; much too

B．too much; too much

C．much too; too much

D．much too; much too

把句子补充完整。

1．谁言寸草心，                                         。 

2．梧桐树叶像                                             。 

3．                                          ，人无再少年。

4．                                                   红似火。 

5．少壮不努力，                                         。

图甲是某物质凝固时的图像，由图像可知：

（1）图甲中的这种物质是     ；（填“晶体”或“非晶体”）

（2）物质在BC段这个过程中要     热；

（3）这种物质在某一时刻温度如图乙所示，则此时的温度为     ℃。

下列工业部门属高新技术产业的是[ ]

A．石油化工

B．钢铁工业

C．造纸业

D．计算机软件制造业

As I grew up in a small town at the foot of a mountain, the visit to the village _____  scenes of my childhood. [ ]

A. called up

B. called for

C. called on

D. called in