2. 外语
  3. The second paragraph is mainly concerned with ____________. The purpose of the "special instruments" mentioned in the third par

The second paragraph is mainly concerned with ____________. The purpose of the "special instruments" mentioned in the third par

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问题 The second paragraph is mainly concerned with ____________.
The purpose of the "special instruments" mentioned in the third paragraph_________.
选项 A、magnify the image of the sun
B、block out the sun’s intense light
C、measure the amount of energy emitted by the sun
D、photograph the sun
答案B
解析 从文章第三段最后一句：At any other time，the corona can be seen only when special instruments are used on cameras and telescopes to shot out glare of the sun’s rays．得知。故本题答案为B。
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