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【简答题】
由几个彼此分离的心皮构成的雌蕊叫 _____________ 。
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反馈参考答案：
举一反三
【单选题】According to the writer, the Government's policy on physical education
A.
should not promote team games at all
B.
upholds the principles of the Olympic Games
C.
can produce successful Marathon participants
D.
should encourage those qualities pursued by Marathon participants
【单选题】绘制中纵剖面图时,位于中线面和舷侧之间的构件一般在图中用()画法表示,即用细双点划线表示这些构件可见轮廓的投影,用细虚线表示构件这些构件不可见轮廓的投影。
A.
投影
B.
假想
C.
重叠
D.
剖切
【简答题】电气图样中的粗实线、细实线、虚线、点划线、双点划线各表示什么意思？
【单选题】It is suggested in the fourth paragraph that comprehensive sex education
A.
does not put off sexual activity among the teens.
B.
helps the teens reduce the risk of becoming pregnant by 50%.
C.
helps 50% of the teens avoid the sexual behavior.
D.
helps the teens avoid becoming pregnant more effectively.
【单选题】According to the passage, abstinence education
A.
means abstinence plus-contraception.
B.
has long-term beneficial impacts on young people's sexual behavior.
C.
includes family planning, HIV/AIDS and other sex education.
D.
is an important election's 'moral values' issue of Bush's re-election.
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