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【单选题】
The Great Wall is ________ tourist attraction that millions of people pour in every year. [     ]
A.
so a wellknown
B.
a so wellknown
C.
such wellknown
D.
such a wellknown
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【单选题】安全库存存在是因为以下何种原因?
A.
买得多就越便宜
B.
为运输时间留出余地
C.
为供应和需求的不确定性提供防护
D.
以上原因都不对
【单选题】—It's 5:00 p.m. I think his family ______ dinner. —I think so. [     ]
A.
is have
B.
are having
C.
have
D.
has
【单选题】— What will you buy for your family, an iPad Mini or an iPhone 5S? — I will take __________. One is for my mum, and the other is for my wife.
A.
either
B.
all
C.
both
D.
neither
【单选题】女性,32岁。因收割水稻劳累,诉全身肌肉酸痛及发热4d,伴咳嗽、腹痛,咯血1次约50~60ml来诊。体检:体温39.2℃,面色苍白,双眼结膜充血,心率140次/分,有奔马律,两肺有湿啰音,腓肠肌有压痛,拟诊为钩端螺旋体病。下列何项实验室检查对钩端螺旋体病诊断有较高特异性及实用性()
A.
病原体分离
B.
动物接种
C.
凝集溶解试验
D.
酶联免疫吸附试验
E.
间接红细胞凝集试验
【简答题】阅读表达(共5小题) I have a happy family. (4) Look! Here is a photo of my family . The boy on the bed is me. I am an English boy. My name is Peter. I am eleven years old. This is my sister. Her name is Kate. ...
【多选题】a-螺旋有何特点
A.
为右手螺旋
B.
绕中心轴盘旋上升
C.
螺距为0.54nm
D.
靠肽键维持稳定
【简答题】脱氧核糖核苷酸是如何构成 DNA 一级结构的? DNA 的一级结构与 RNA 的一级结构有哪些不同? 2. DNA 一级结构是如何形成 DNA 二级结构的? 3. 为什么 DNA 被称为双螺旋 DNA ?生物体内有没有三螺旋 DNA 的存在呢? 4. 科学家是如何得出 B- 双螺旋 DNA 结构特点的? 5. 为什么是 B-DNA 的结构特点,而非 A-DNA 呢?
【简答题】the / family / I / youngest / in / my / am ________
【简答题】I am Sergey Brin! I was born in Moscow. In 1979,when I was 5, my family immigrated to California, USA . I remember that on my 9 th birthday, I got my first computer “Commodore ”. Later I graduated w...
【单选题】女性,32岁。因收割水稻劳累,诉全身肌肉酸痛及发热4天,伴咳嗽、腹痛,咯血1次约50~60ml来诊。体检:体温39.2℃,面色苍白,双眼结膜充血,心率140次/min,有奔马律,两肺有湿啰音,腓肠肌有压痛,拟诊为钩端螺旋体病。下列何项实验室检查对钩端螺旋体病诊断有较高特异性及实用性()
A.
病原体分离
B.
动物接种
C.
凝集溶解试验
D.
酶联免疫吸附试验
E.
间接红细胞凝集试验
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