利用如图所示的实验装置可将机械能转化为_________能,根据这一原理人类研制成了__________机。
电,发电
词语释义(共5小题,每小题l分,满分5分)
选择与句中划线部分意义最接近的解释,并将其字母代号填入答题卷相应空格内。
小题1:Yang Shanzhou becomes well-known in China for planting so many trees for people.
A.great
B.famous
C.friendly
D.warm小题2:Try again, maybe you will come up with a better idea.
A.turn up
B.put up
C.get up
D.think up小题3:It's a chicken-and-egg question. I can't answer you now.
A.easy
B.clear
C.difficult
D.funny小题4:Come and join us. We are short of hands.
A.We need help.
B.We hurt our hands.
C.Our hands are short.
D.We can do it by ourselves,小题5: My clothes are not fashionable.
A.lost
B.new
C.out of style
D.worn out
有人触电时,如伤势较重,已失去知觉,但心脏.呼吸功能都还存在,应使触电者()。
A.舒适地平卧,
B.使空气流通,
C.解开衣服使呼吸顺畅;
D.若天冷,应注意保暖。