妊娠月份已足，腹痛或作或止，腰不痛者，称为（） A.临产 B.盛胎 C.试胎 D.弄

羊水中葡萄糖浓度在何水平反映胎儿肾成熟（）

A.2.29mmol/L

B.<0.40mmol/L

C.<0.56mmol/L

D.>0.56mmol/L

E.>0.80mmol/L

观光电梯从一楼上升到十楼的过程中，相对于电梯来说，乘客是______的（填“运动”或“静止”）．

Scientists are trying to make the deserts ,which get very little rain, into good land again. They want to bring water to the deserts，so people can live and grow food. They are learning a lot about the deserts. But more and more of the earth is becoming desert all the time. Scientists may not be able to change the desert in time．

Why is more and more land becoming desert？Scientists think that people make deserts．People are doing bad things to the earth against the scientists’ wish．

Some places on the earth don’t get much rain. But they still don’t become deserts．This is because some green plants are growing there．Small green plants and grass are very important to dry places．Plants don’t let the sun make the earth even drier． Plants do not let the wind blow the dirt away．When a bit of rain falls，the plants hold the water. Without plants, the land can become desert more easily．

小题1:Deserts ____________ ．

A．never have any plants or animals in them

B．can all be turned into good land before long

C．are becoming smaller and smaller

D．get very little rain小题2:More and more land is becoming desert  because____________．

A．plants can’t grow there

B．there is not enough rain

C．people haven’t done what scientists wish them to do

D．scientists know little about the deserts小题3:Small green plants are very important to dry places because ________

A．they don’t let the sun make the earth even drier

B．they don’t let the wind blow the soil away

C．they hold water

D．All of the above．小题4:After reading this passage, we learn that _____________ ．

A．plants can keep dry land from becoming desert

B．it is good to get rid of the grass in the deserts

C．all places without much rain will become deserts

D．it is better to grow crops on dry land than to cut them

据报道，如今经济发展了，生活条件好了，校园里的一些学生出现了相互攀比摆阔、超前消费的现象。吃要进星级饭店，穿要进口名牌。针对此现象，你认为正确的做法是 [ ]

A、作出预算，把钱花在关键的地方

B、避免非理性消费，购买物有所值、经济实用的商品

C、不与周围的人进行盲目攀比，不浪费金钱

D、有钱就多花，没钱就少花

在安装立管时，其垂直偏差应控制在每米不超过（）mm。

A.3

B.2

C.2.5