关节腔的描述错误的是()
A.关节腔内是负压
B.是滑膜关节的基本结构之一
C.由关节面和关节囊组成的密闭腔隙
D.内有丰富的滑液
E.内有少量的滑液
参考答案:D
根据汉语意思选择正确句子。
1. 我家有5个家庭成员。[ ]
A. My family has eight members.
B. My family has five members.
C. My family has four members.
2. 瞧!我的父母亲和我。[ ]
A. Look! My parents and me.
B. Look! My parents.
C. Look! My parent and me.
3. 树上有多少个苹果?[ ]
A. How many apples are there near the tree?
B. How many apples are there on the tree?
C. How many apples are there under the tree?
黄土高原千沟万壑地的地表形态的成因是
A.地壳上升运动
B.流水的侵蚀、切割
C.风力沉积作用
D.流水的沉积作用