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搜题
【单选题】
-xy 2 z 3 的系数及次数分别是 [     ]
A.
系数是0,次数是5 ;
B.
系数是1,次数是6;
C.
系数是-1,次数是5;
D.
系数是-1,次数是6;
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举一反三
【单选题】下列不会引起急性胰腺炎的是()
A.
酒精
B.
暴饮暴食
C.
胆囊炎
D.
胰管梗阻
E.
粗纤维食物
【单选题】Some workers in that factory have to work ____ night.
A.
at
B.
for
C.
with
D.
among
【简答题】Complete the notes below with one or two words or numbers. 1. Some factory workers work ________ a day, and factory ________ have killed people. Many earn less than ________ a day. 2. In the Democrati...
【简答题】你认为你在学校属于好学生吗?
【简答题】They became factory workers and lawyers and (2) ______ and doctors, one President of the United States. Some developed (3) ______ . A few developed schizophrenia.
【多选题】下列关于营养强化剂,错误的是
A.
叶酸摄入量不足可以导致神经管缺陷及其他先天性疾病发生率增加。
B.
备孕期和怀孕前期必须补充叶酸。
C.
维生素D和钙的吸收无关。
D.
水溶性维生素C可以较长时间存在人体内。
【简答题】Listen to the recording and complete the notes below with one or two words . 1. Some factory workers work 10 to 12 hours a day, and erous working [1] and factory fires often kill workers . Many w...
【简答题】Some factory workers work 1)_____ a day and factory 2)_____ have killed people. Many earn less than 3)_____ a day.
【判断题】现在没有一个国家可以根除腐败。
A.
正确
B.
错误
【多选题】下列关于切花的采收说法不正确的有
A.
大部分切花宜在晚上采收。
B.
在能保证花蕾正常开放、不影响品质的前提下,应尽可能在充分发育的花蕾期采切。
C.
剪切时应形成一平面,以缩小损伤面积,同时立即将切花基部插入保鲜液中。
D.
采切预留的花茎应尽量长。
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