求出下面各题商的近似值.(得数保留两位小数)
1.57÷3.9
5.586÷0.72.
(1)1.57÷3.9≈0.40;
(2)5.586÷0.72≈7.76.
营养风险筛查(NRS)2002主要包括的内容有()
A.疾病严重程度
B.精神和身体功能
C.营养缺失
D.液体平衡
E.年龄影响
11. It is because people are likely to stay indoors ______ the virus can spread easily ______ people often catch colds.
A.and, that
B.so, that
C.therefore, so
D.that, that