试题题干
WORD FORMATION
Complete the following sentence with the proper form of the word in the bracket.
(long) The earth is much cooler than the sun, and the wave
of the earth’s radiations is much longer than that of sunrays.
参考答案
试题解析
此处缺少名词。
the是冠词，后面接名词。of是介词，所以中间部分应该是名词。而句中提到的是radiation（辐射），所以此处应该涉及到的是波长，所以填length，变long为名词length。
句意：地球比太阳温度低，因为地球辐射的波长比太阳光线要长得多。