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【单选题】
Fresh air, enough exercise and nutritious food ______ to sound health.A.
devote
B.
add
C.
contribute
D.
stick
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举一反三
【单选题】The young man stopped and looked back as if ______ whether he was being followed.
A.
seeing
B.
to have seen
C.
having seen
D.
to see
【单选题】From“he has never looked back”in Paragraph 2，we learn that Peter__________. 查看材料
A.
did not feel lonely
B.
was always hopeful
C.
did not think about the past
D.
became mote and more successful
【单选题】The old man often looked back on the past days ________ he worked hard to make a living.
A.
which
B.
when
C.
where
D.
that
【单选题】He sat back on the chair, took a book and began to read, ___.
A.
being looked at ease
B.
looked rather at ease
C.
to look rather at ease
D.
looking rather at ease
【单选题】下列有关铝及其化合物的说法，正确的是
A.
除了铝土矿，工业上还可用明矾（主要成分KAlSO 4 ·12H 2 O）为原料提取铝
B.
明矾水解成Al(OH) 3 胶体，可用于水的净化、杀菌、消毒
C.
铝制容器不能长期存放酸性、碱性和富含食盐的食品
D.
将铝条插入硫酸铜溶液中，无明显现象，由此可得出结论：铝条表面的氧化膜阻碍了Al与CuSO 4 反应
【简答题】营养不良患儿最先出现皮下脂肪减少的部位是:A. 面部 B. 躯干 C. 腹部 D. 四肢 E. 臀部
【单选题】He sat back on the chair, listening to the MP4 and ____ . [ ]
A.
looking at ease
B.
looked at ease
C.
being looked at ease
D.
to look at ease
【单选题】关于器械储存错误的是
A.
灭菌物品和消毒物品应分开放置,并有明显标识;
B.
采用纺织材料和牙科器械盒灭菌包装的无菌物品储存有效期:7天; 一次性纸袋:30天
C.
裸露灭菌及一般容器包装的高度危险口腔器械灭菌后应立即使用,最长不超过4小时。
D.
口腔器械消毒或灭菌后置于清洁干燥的容器内保存,保存时间不宜超过7天。
E.
采用一次性皱纹纸和医用无纺布、一次性纸塑袋灭菌包装的无菌物品储存有效期:180天;
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