问题 单项选择题

如果色光被物体表面全部吸收,物体呈现()色。

A.红

B.白

C.黑

D.紫

答案

参考答案:C

写作题

假设你是一名已经移民到美国的学生Tim,在电视上,你看到中国出现了H7N9禽流感(H7N9 bird flu),目前已经有87名禽流感患者,你为你在中国上学的笔友Mike的健康与安全担心。请立即给他写一封e-mail询问他的情况,并给他提出防护建议。

要点:

询问

他的健康状况

他们学校有无H7N9

他们是否还在上学

建议

尽量待在家里,少去人多的地方;

勤洗手,讲卫生;

多开窗,保持空气新鲜;

多吃水果蔬菜

Dear Mike,

From the TV I know H7N9 bird flu have been discovered in China. 87 people have been confirmed to be infected with the H7N9 bird flu. I am worried about you.

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So far, the disease is not so deadly as it seems to be. Do be at ease! Take care and you will be OK.

Yours,

Tim

单项选择题