问题
选择题
能够说明“分子间存在间隔”的事实是[ ]
A. 空气被压缩后体积缩小
B. 1L芝麻和1L绿豆混匀后体积小于2L
C. 走进花园,闻到花香
D. 2L氢气和氧气的混合气体点燃后体积小于2L
答案
答案:A
能够说明“分子间存在间隔”的事实是[ ]
A. 空气被压缩后体积缩小
B. 1L芝麻和1L绿豆混匀后体积小于2L
C. 走进花园,闻到花香
D. 2L氢气和氧气的混合气体点燃后体积小于2L
答案:A
Passage One
According to psychologists, a compulsive spender wants to spend a lot of money because:
A.he suffers from an irrational compulsion.
B.he takes great pleasure in the things he buys.
C.he needs more necessities in life.
D.he feels he can do anything with his credit card.