问题
选择题
下列不是昆虫外骨骼的功能的是（ ）
A．防止体内水分的蒸发
B．支持内部柔软器官
C．保护内部柔软器官
D．协助运动
答案
昆虫的身体外有外骨骼，可以保护、支撑身体内部柔软器官的作用，还可以减少体内水分的散失，利于昆虫的生活．
故选D
搜题请搜索小程序“爱下问搜题”
下列不是昆虫外骨骼的功能的是（ ）
A．防止体内水分的蒸发
B．支持内部柔软器官
C．保护内部柔软器官
D．协助运动
昆虫的身体外有外骨骼，可以保护、支撑身体内部柔软器官的作用，还可以减少体内水分的散失，利于昆虫的生活．
故选D
| 综合填空： | |
1._______. You also remember them 2._______. Do you like to study in the 3.________ room? This is not a good place, because it is usually too 4.______. You need to study in a quiet place, like your bedroom. A quiet place will 5.______ you only to think about one thing. When you study, do not think about other things at the 6._______ time. Only think about your homework. 7.______ you do this, you will do your homework more quickly. And you will make 8.______ mistakes. Good study habits are very important. If you do not have them, try to learn. If 9._______ are already (已经) good, try to make them 10._______. |