直接剪切试验中，土体的抗剪强度始终不变。
参考答案：错
用括号内所给单词的适当形式填空。
1. How _____________ (old) is your father?
2. Is this _____________ (Mike) pencil?
3. There are two _____________ (knife) on the desk.
4. Amy and I _____________ (be) good at Chinese.
5. It was a _____________ (cloud) day.
治疗轻度营养不良最初的热能是多少（）
A.40～55kcal/（kg·D.
B.60～80kcal/（kg·D.
C.90～100kcal/（kg·D.
D.110～115kcal/（kg·D.
E.120～125kcal/（kg·D.
