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【单选题】
X、Y、Z、M、W为五种短周期元素。X、Y、Z是原子序数依次递增的同周期元素，且最外层电子数之和为15，X与Z可形成XZ 2 分子；Y与M形成的气态化合物在标准状况下的密度为0.76g/L；W的质子数是X、Y、Z、M四种元素质子数之和的1/2。下列说法正确的是 [ ]A.
原子半径：W＞Z＞Y＞X＞M
B.
XZ 2 、X 2 M 2 、W 2 Z 2 均为直线型的共价化合物
C.
由X元素形成的单质不一定是原子晶体
D.
由X、Y、Z、M四种元素形成的化合物一定既有离子键，又有共价键
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【单选题】She was lifting handfuls of fine sand and letting it pour __________ her fingers.A．acrossB．inC．th
A.
15.She was lifting handfuls of fine sand and letting it pour __________ her fingers. A．across
B.
in
C.
through
D.
into
【单选题】"She has green fingers" means ( ).
A.
She has been ill.
B.
There is something with her fingers
C.
She is good at gardening.
【单选题】She was lifting handfuls of fine sand and letting it pour __________ her fingers.A．acrossB．inC．t
A.
15. She was lifting handfuls of fine sand and letting it pour __________ her fingers. A．across
B.
in
C.
through
D.
Into
【单选题】She thanked him and hung up the phone, her tears now flowing hard. Her fingers shaking, as she slowly reached to get the card. Inside the card, she saw that he had written her a note.
A.
她谢了他，挂了电话，眼泪在艰难流出。她的手指在颤抖，当她慢慢地伸手去拿卡片时。在卡片里，他看到了他写给她的短信。
B.
她谢了他，挂了电话，眼泪夺眶而出。当她慢慢地伸手去拿卡片时，她的手在颤抖。在卡片里，他看到了他写给她的短信。
【单选题】She’S fainted．Throw some water on her face and she may soon__________．
A.
come around
B.
come again
C.
come back
D.
come on
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