题目内容

Listen to the conversation and then choose the best answers.

A. Because they can be collected and analyzed.
Because they can be sent on a different route.
C. Because they can be sent back to space.
D. Because they can potentially destroy our planet.

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Albert Einstein.
B. Christopher Columbus.
C. Neil Armstrong.
D. Henry Ford.

A. 对
B. 错

A. 单击桌面上“我的电脑”按钮,然后选择“程序”选项
B. 选择“程序”菜单中“Microsoft Excel”选项,显示Microsoft Excel 2016 工作画面
C. 通过双击桌面上的快捷方式图标启动Excel 2016
D. 双击任何一个已有的Excel工作簿

A. 晶状体弹性减弱
B. 玻璃体弹性减弱
C. 晶状体弹性增强
D. 玻璃体弹性增强
E. 晶状体和玻璃体弹性均增强