请选择你听到的单词的字母(A 还是B)[音频]7. The hairdresser's ____ ( A. shirtB. shut)8. He shot ______ ( A. a gun B. again)
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能扩大小肠吸收面积的结构有
A. 环形皱襞
B. 绒毛
C. 微绒毛
D. 杯状细胞
E. 潘氏细胞
内含丰富淋巴组织的消化管有
A. 胃
B. 十二指肠
C. 回肠
D. 结肠
E. 阑尾
小肠腺由___________细胞、___________细胞、_____________细胞和____ _____细胞等组成.
The ________sentence structure is commonly seen in English news report.
A. Subject+Verb
B. Subject+Verb+Object
C. Subject+Verb+Predicate
D. Subject+Verb+Object+Object