题目

句型转换 (1) There are sixty desks in the classroom. (对画线部分提问) there in the classroom? (2) There is some tea in the cup. (改为否定句)Theretea in the cup. (3) There are some pens in the box. (改为一般疑问句) pens in the box? (4) I drink much water every day. (改为同义句)I drinkwater every day. (5) Our classroom is very big. (对画线部分提问) your classroom?下列四个选项中哪个不是光源( )A.太阳 B.月亮 C.恒星 D.萤火虫 B 【解析】 试题分析:自身能够发光的物体叫光源.分为自然光源和人造光源,月亮不是光源.太阳、恒星、萤火虫本身能发光,是自然光源.月亮自身是不会发光的,我们之所以能够看见月亮,是因为月亮能够反射太阳光进入我们的眼睛.故选B.
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