问题
单项选择题
对氨基酸的描述,哪个是不正确的
A.半胱氨酸含有巯基
B.酪氨酸和丝氨酸含羟基
C.亮氨酸和缬氨酸是支链疏水性氨基酸
D.谷氨酸和天冬氨酸含两个氨基
答案
参考答案:D
对氨基酸的描述,哪个是不正确的
A.半胱氨酸含有巯基
B.酪氨酸和丝氨酸含羟基
C.亮氨酸和缬氨酸是支链疏水性氨基酸
D.谷氨酸和天冬氨酸含两个氨基
参考答案:D
根据短文内容,选出5个句子填入文中空缺处,使短文内容完整正确,其中一项为多余选项。 Which university would you like to go to in the future? It’s not too early to think about it right now. Students at Hilltop School had a University Week at the end of last month.小题1: For instance, they designed a flag for a virtual(虚拟的) “University of Hilltop”. 小题2: He said he started the program to help students form their aims. “University may not be for everyone, but we want the program to help students form their aims.” He said. 小题3: Eric ,a student in Grade 8,said“University Week made me realize that university is only four years away. I should do research about where I want to go.” Paul, another student in Grade 8 said that he realized there were so many universities for him to choose. 小题4: The school also invited people to give career talks. The first talk was given by Captain Brown, a policeman. He talked about how to choose a career way. 小题5: “The program opened up the students’ eyes.” said Mr Miller.
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