小儿体表面积计算与成人不同点在于
A.头大,躯干小
B.头大,四肢小,躯干相似
C.头大,四肢、躯干相似
D.头大,躯干大,四肢相似
E.头大,下肢短小,躯干相似
参考答案:E
计算:
(1)(-4)-(+13)+(-5)-(-9);
(2)(-48)÷8-(-25)×(-6);
(3)-24+(-3)2十5×(-6);
(4)-14+(-1)5-(4÷2)3-4÷23.
用所给词的正确形式填空。
1. Your father looks very (health).
2. You must look after (you).
3. (read) in bed is bad for your eyes.
4. He (be) ill yesterday.
5. I stayed away from school for (little) than a week last term.
6. You (be) not here yesterday morning.
7. Doing eye (exercise) is good for your eyes.
8. Do you like eating (vegetable)?
9. She was away for (many) than three weeks last year.
10. I (usual) get to school very early.