水分经叶表面的蒸腾作用有两条途径：一种是通过角质层的蒸腾叫做（）；另一种是通过气孔的

下列选项中都属于生物的是（　　）

A．细菌和病毒

B．木头和石头

C．树桩和钟乳石

D．机器人和枯叶

单句改错。以下句子中共有10处错误,每个句子错误数已给出,请改正。（每处1分,共10分）

小题1:There are also special offers for people who don’t want to go straightly home afterwards.(1)

小题2:Marco was asked the question, “was it all true?” , which he replied, “ I have only told a half of what I saw!”(1)

小题3:Our water has been run out, so we’d better get some. (1)

小题4:You can’t imagine what difficulty we had walked home in the snowstorm. (1)

小题5:The 700-square-miles island is home of some of the UK’s most beautiful wildlife (2)

小题6:In the last ten years, the number of cars on the roads in Britain have gone up to 30%.(2)

小题7:Anger and stress are nothing comparing to the real costs of the motor car. (1)

小题8:Wherever you go in America, you can find highways, multi-storey car parks, drive-in cinemas and drive-through fast food restaurants, all are built to suit the needs of car owners. (1)

如图中的实验装置可用于制取乙炔。请填空

如图中的实验装置可用于制取乙炔。请填空：

(1)图中A管的作用是 _____________，制取乙炔的化学方程式是 ________________。

(2)乙炔通入酸性KMnO₄溶液中观察到的现象是________，乙炔发生的化学反应类型是 __________________。

(3)乙炔通入溴的CCl₄溶液中观察到的现象是_____________________，乙炔发生的化学反应类型是_____________。

(4)为了安全，点燃乙炔前应____________，乙炔燃烧时的实验现象是________________。

请简述制定客户来电通话中断回拨流程的目的。

呋塞米没有下列哪一项作用

A．利尿作迅速而短暂

B．提高血浆尿酸浓度

C．可促进远曲小管的Na⁺-K⁺交换

D．迅速解除左心衰竭所致急性肺水肿

E．抑制近曲小管Na⁺、Cl^-再吸收