吴楚“七国之乱”是以吴王刘濞为首联合其他六位异性诸侯发动的一次联合大叛乱,此次叛乱是诸侯王为了保持自己原有的权利。()
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汉朝时期羌人分布广泛,是以青海地区为核心,南边到达蜀汉,西北到达西域。()
A. 对
B. 错
1. Riding a bike, using your own shopping bags, and buying healthy food are.
A. good things to do for the environment
B. good to do, but not enough
C. not important
Most food that we eat in the United States travels.
A. 7,000 miles by airplane and truck
B. about 1,500 miles from the place it is grown to the place it is eaten
C. by boat from Chile or Costa Rica
The author says that local produce is best because .
A. it uses less gas and it pollutes less
B. it is organic and uses no chemicals
C. it is cheaper than produce that comes from far away
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