1. [多选题]在铁路沿线(along the railway line)设置草方格沙障,其主要生态功能是
A. 截留水分
改变气候类型
削弱风力
改变植被类型
2. [单选题]观察根的初生结构时,选择切片的最适部位是( )。
A. 根尖伸长区
B. 根尖分生区
C. 根尖根毛区
D. 根毛区以上的部位
3. [单选题]具有隐头花序的植物是( )。
A. 向日葵
B. 无花果
C. 桑
D. 苹果
4. [单选题]十字花科子房常有次生假隔膜,故形成中轴胎座。( )
A. 正确
B. 错误
5. [单选题]近代民族工商业的发展,福建省具有代表性。1875—1895、1912—1913、1914—1918四个阶段福建民族工矿企业(industrial and mining enterprises)年均注册数,与选项有对应关系。其中1896—1911年应是
A. 4.6个
B. 3个
C. 2.6个
D. 0.55个
6. [单选题]The school was moved out of downtown as the number of students had grown too_______.
A. small
B. few
C. 1arge
D. many
7. [单选题]It is often ( )that human beings are naturally equipped to speak.
A. said
B. to say
C. saying
D. being said
8. [单选题]Your house is always so neat—how do you ______ it with three children?
A. manage
B. serve
C. adapt
D. construct
9. [单选题]
A. worried
B. sad
C. surprised
D. nervous
10. [单选题]According to the text, what is the major cause of the flooding spam?
A. Companies rely on e-mail for communications.
B. More people in the world communicate by e-mail.
C. Many computer viruses contain spam e-mail.
D. More advertisers begin to promote sales through spam.