宏远商贸公司有A、B两种型号的商品需运出，这两种商品的体积和质量分别如下表所示：
体积（m3/件）
质量（吨/件）
A型商品
0.8
0.5
B型商品
2
1
⑴ ____
⑵ ____
⑶ ____
⑷ ____
⑸ ____
A.I went to the zoo last Sunday.
B.Yang Liwei spent about twenty-one hours in space.
C.I met Simon at the airport last Sunday.
D.My father was a teacher five years ago.
E.She wrote some letters on the apple.
3080×5等于（ ）
do my h
="(1,1)," 
="(1,-1)," 
=(2cos
,2sin
1,
）2+