问题
选择题
| 实验证明，蛇的鼻眼之间有一种红外感受器，对周围温热物体产生感觉，人们受到启发研制出了响尾蛇导弹．关于蛇的红外感受器，下列说法正确的是（ ） A．接收红外线，引起蛇的视觉 B．接收红外线，引起蛇的警觉 C．发射红外线，引起蛇的视觉 D．发射红外线，引起蛇的警觉 |
答案
答案：B
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| 实验证明，蛇的鼻眼之间有一种红外感受器，对周围温热物体产生感觉，人们受到启发研制出了响尾蛇导弹．关于蛇的红外感受器，下列说法正确的是（ ） A．接收红外线，引起蛇的视觉 B．接收红外线，引起蛇的警觉 C．发射红外线，引起蛇的视觉 D．发射红外线，引起蛇的警觉 |
答案：B
Today we 41 only three lessons in the morning. The first lesson is math. It 42 at eight o’clock and finishes at 43 to nine. It is in Room 101. But I don’t like math. Then the second lesson is my favorite 44 —music. It starts at nine o’clock. The 45 lesson in the morning is PE. It starts at ten 46 ten and finishes at five to eleven. We have our lunch at eleven thirty 47 the second floor of dining hall. We have two lessons 48 lunch. Art starts at two and at three o’clock we have a 49 lesson. We can learn a lot of knowledge about China. At about four in the afternoon 50 is over.
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