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【单选题】
头孢菌素类的特点不包括A.
抗菌谱广
B.
杀菌力弱
C.
与青霉素仅有部分交叉过敏现象
D.
对β-内酰胺酶有不同程度稳定性
E.
抗菌作用机制与青霉素相同
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反馈参考答案：
举一反三
【单选题】下列加点字注音全部正确的一项是
A.
羁 [jì] 鸟 狗吠 [fèi]
B.
荫后 [yīn] 檐 桑树颠 [diān]
C.
守拙 [zhuō] 墟 [xū] 里烟
D.
桑 [shāng] 树 樊 [fán] 笼
【简答题】What was the most important document produced between China and the United States when President Nixon visited China in 1972?
【简答题】China publicly declares to the United Nations that it observes the principle of“pacta sund servanda”，subordinates its national laws to its international treaty obligations.
【单选题】YangLiwei showed the flags of China and the United Nations, __________ the wishes of the Chinese people to explore and use space peacefully.
A.
express
B.
expressed
C.
expressing
D.
expresses
【单选题】The population of China is larger than ______ of the United States.
A.
this
B.
that
C.
these
D.
those
【单选题】There are more AIDS cases in the United States， China and Russia. 查看材料
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】The ______ talks between China and the United States were the base of the later agreement.
A.
original
B.
primary
C.
initial
D.
primitive
【简答题】自动售检票系统主要有 、 、 和 四部分组成。
【单选题】下列加点字注音全部正确的一项是
A.
睿 智 (ru ì ) 浩 瀚 ( h à n) 蠕 动 (r ú ) 残羹冷 炙 (zh ì )
B.
自 诩 (x ǔ ) 冠 冕 ( mi ǎ n) 踟 蹰 ( zh ī ) 载 渴载饥 ( z à i)
C.
羞 涩 (s è ) 栖 息 (x ī ) 宁 谧 ( m ì ) 锲 (q ì )而不舍
D.
怀 揣 ( chu ā i) 敷 衍 ( y ǎ n) 婀 娜 ( nu ó ) 自惭形 秽 (su ì )
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