Let's look ___________ a map.[ ]
A. /
B. at
答案:B
下列物质由肝细胞内核糖体合成的是[ ]
A.转氨酶
B.糖原
C.胆汁
D.尿素
拼写单词 。 根据句意和所给音标写出单词。
1.It will be __________ /'windi/ the day after tomorrow.
2.Everyone else in my class was invited__________ /ik'sept/ me.
3.When prices are __________ /listid/, you can go to the store with the lowest price.
4. He put the book on the ___________/∫elf/.
5.The little boy waited at the bus stop _________/En'til/ his mother found him.