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【判断题】
家族性易性癖病例的发生与遗传因素有一定关系A.
正确
B.
错误
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举一反三
【单选题】While doubts about the medicine’s safety have____________, interest continues to grow.
A.
dropped out
B.
fell down
C.
withdrew from
D.
faded away
【单选题】What will happen to adults if language tests are cancelled?
A.
They will be very happy to do what ever they want to do.
B.
They will devote themselves to business operations.
C.
They will spend more time and energy on their careers.
【单选题】Night of the Living Ants When an ant dies，other ants move the dead insect out of the nest．This behavior. is interesting to scientists，who wonder how ants know for sure-and so soon-that another ant is ...
A.
the chemical that contains poison．
B.
the chemical that announces death．
C.
the chemical that prevents death．
D.
the chemical that causes death．
【简答题】如图所示,在平行四边形ABCD中,对角线AC,BD相交于点O,已知△BOC的周长比△AOB的周长大3,平行四边形ABCD的周长为26,则BC的长度为______ .
【简答题】如图所示，在平行四边形ABCD中，M，N分别为DC，BC的中点，已知 =c， =d，试用c，d表示 ， .
【单选题】What will happen to children if they use phones and tablets before bedtime?
A.
It will prevent them from sleeping.
B.
It will help them sleep well.
C.
They will be made to feel excited
D.
Their communicative skills will be improved
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