Brumbaugh kneels on the ground before climbing trees to ___________.
A. beg for the safety of climbing
B. expect to climb faster than her husband
C. show respect for the tree
D. ask for permission of her husband
查看答案
Sophia Sparks prefers the term “inspirational tree climbing” because it ____________.
A. provide people with more chances to play outside
B. bring a lot of pleasure to life
C. deepens personal love between each other
D. makes people realize they should protect trees
What’s the best title for the passage?
A. Tree-climbing travelling
B. Slow travel movements
C. Dangers of climbing
D. Respect for nature
下列哪组分子是由极性键组成的非极性分子
A. CH4 CO2
B. CH4 NH3
C. NH3 H2O
D. N2 O2
下列各物质其分子之间只存在色散力的是
A. CO2
B. NH3
C. H2S
D. HF
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