Compared with nuclear families, extended families may
A. have more generations under one roof.
B. have to face more problems.
C. keep more traditions and customs.
D. keep closer family bond.
How long do the volunteers work in a small bam on a farm outside of Freeport, Illinois？
A. 5 hours.
B. 10 hours.
C. 17 hours.
D. 20 hours.
The news item mainly about
A. meat canning, a tradition in American church groups.
B. American church groups' canning food for those in need.
C. how to can food in American church groups.
D. the canned food delivery all over the world.
正确答案是（）
A. decided
B. regulated
C. controlled
D. changed
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