题干
We do morning exercise every day, from which we ______ a lot.
A：strengthe
B：gai
C：award
D：benefit
答案(点此获取答案解析）
D
A：strengthe
B：gai
C：award
D：benefit
left my parents for America ____ how much I loved them.
中所列待测物质的检测，所选用的检测试剂及预期结果都正确的是（ ）