沙漠植物常具有较小的叶片,且叶片的气孔较小。这是利于[ ]
A.减少呼吸作用
B.减少水分散失
C.提高光合作用效率
D.不被动物食用
答案:B
(A)
During the day we work and play,and at night we sleep. Our body rests when we sleep. In the morning we are ready to work and play again. Our body grows most when we are asleep. Children who are tired usually need sleep. We can get better at our lessons after having plenty of rest. Boys and girls who are eight or nine years old need ten hours of sleep every night. Our body needs plenty of air when we are asleep. If we do not get enough fresh air, we will feel tired when we wake up. While in bed we must not cover our head,our lungs need to get enough fresh air. If we open our windows at night,we can have plenty of fresh air. Cool air is better than warm air.
小题1:Our body grows most while we are _______.
A.eating
B.playing
C.sleeping
D.reading小题2:Too little sleep makes us _______.
A.tired
B.hungry
C.happy
D.angry小题3:—What may cause us to feel tired in the morning?
—_______ during the sleep.
A.Too much air
B.Not enough fresh air
C.Too much cold air
D.Too much warm air小题4:How many hours of sleep should 9-year-old children have every night?
A.8 hours.
B.9 hours.
C.10 hours.
D.11 hours.小题5:What do the lungs need most?
A.Fresh air.
B.Exercise.
C.Warm air.
D.Cold air.
客户关系岗位职务说明书编制时的细节问题包括()
A.不同客户关系岗位的职务目标
B.确定职务职责
C.规定核心能力
D.绩效标准的规定