词汇练习（逻辑）
1. A water molecule consists of two hydrogen atoms attached to a single, larger oxygen atom. The angle between the two hydrogen atoms is 120 degrees — the same angle as the angles of a hexagon — which accounts for the characteristic six-sides structure of ice crystals.
The phase accounts for in the passage means a
A explains
B decreases
C connects
D summarize
2. Today’s executives must have some grasp of economic realities and the political process, as well as some comprehension of the basic framework within which scientific and technological changes take place.
The word grasp in the passage is closest in meaning to a
A understanding
B communication
C criticism
D perdition
3. The must gain an understanding of human nature, including its negative aspects, such as the sources of human conflict and pitfalls of power.
The word pitfall in passage is closest in meaning to D
A benefits
B stages
C causes
D hazards
4. Finally, the dynamics of the group should be balanced and the discussion leader must not be allowed to overwhelm the conversation or the agenda.
The word overwhelm in paragraph is closest in meaning to A
A dominate
B plan
C Summarize
D Contradict
5. Groups work best when they consist of people who have similar duties, responsibilities, and mission. This does not mean, however that everyone in the group must think in lockstep.
The phase lockstep in passage is closest in meaning to A
A alike
B critically
C aloud
D quickly
6. The heavy amounts of heat and pollution rising from cities both delay and stimulate the fall of precipitation, depriving some areas of rain while drenching others.
The word drenching in paragraph is closest in meaning to
A almost missing
B severely damaging
C thoroughly wetting
D entirely avoiding
7. These is growing evidence that urbanization has a sharp impact on climate,