How many groups of people using the scientific method are mentioned in the passage？
A. Three.
B. Two.
C. One.
D. Four.
查看答案
Andrea allowed the hitchhiker to take a ride in her car, mainly because ______.
A. the hitchhiker was an old woman
B. she was curious about the old lady
C. the lady had a heavy bag
D. she knew the old lady
Andrea suddenly stopped the car because ______.
A. she thought she had hit a child on the road
B. she skidded on some ice on the road
C. she wanted to trick the passenger into getting out
D. she couldn't concentrate and nearly had a crash
【B18】
A. growing
B. growth
C. future
D. tomorrow
Where does the writer usually spend his holiday？
A. In the mountain.
B. In the north.
C. In the country.
D. By the sea.
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