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【单选题】
胎儿通过脐带与胎盘相连，胎盘的主要作用是（ ）A.
胎儿连接母体的器官
B.
胎儿与母体进行物质交换的器官
C.
胎儿的器官
D.
母体的器官
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】Li Ping has worked in the company for many years. He is a .
A.
window
B.
ball
C.
tall
D.
mamager
【单选题】—Who has taken my pen away? —__________. He was here a moment ago. A. It must be Li Ping B. It is Li Ping take C. Li Ping is D. Li Ping must take
A.
It must be Li Ping
B.
It is Li Ping take
C.
Li Ping is
D.
Li Ping must take
【单选题】Li Ping has worked in the company for many years. He is a ________ .
A.
window
B.
wall
C.
book
D.
manager
【单选题】—What a nice picture！But it is too small. —I'm glad you like it. I'll ask a photographer to________it. [ ]
A.
improve
B.
reduce
C.
enlarge
D.
appreciate
【单选题】What a nice picture of a house!It would be___with some green trees around it.
A.
good
B.
better
C.
worse
D.
best
【单选题】What a nice picture! You draw very well.
A.
Yes, not so bad.
B.
Yours is good.
C.
Of course not.
D.
Thank you.
【简答题】在铺筑沥青面层之前,在基层上浇洒乳化沥青等,形成的透入基层表面的薄层称为____。而为加强路面的沥青层与沥青层之间、沥青层与水泥混凝土路面之间的粘结,洒布由沥青材料做成的薄层,称为___________。
【单选题】Oh, what a nice picture! You draw very well. ---________________.
A.
Yes, it’s very bad
B.
Yours is good
C.
Of course not
D.
Thank you
【单选题】Oh, what a nice picture! You draw very well.
A.
Yes, it's very bad.
B.
Yours is good.
C.
Thank you.
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