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Exercise 2 Ebola What’s ebola? Ebola is a virus. A virus is a very small thing. A bit of 1 and a few proteins 2 . It has no ability to do anything by itself what so ever and can only survive and 3 by infecting cells. To avoid this we have the immune system. How does it attack people? But when Ebola strikes, it directly attacks the immune system. In a nutshell, it takes over the cell, 4 the cell’s protective mechanisms and 5 it. The cell now becomes a virus production machine and uses its resources to build Ebola viruses. So the immune system is seriously 6 and unable to react while the virus rapidly multiplies. We're talking billions. Another area of the body Ebola attacks is the 7 . The virus finds it very easy to enter the liver and it quickly starts killing loads of liver cells and causing 8 and more 9 . Why no need to panic? Currently 10 infected die from Ebola. Wow! Ok. Ebola is nasty. So it’s time to panic, right? No, not even close. The 11 of Ebola gets paper sold and , YouTube video shared, so everybody is talking about Ebola. But currently the only way to get infected by Ebola is to come into contact with the 12 from the person who shows the symptoms allfrom 13 . So just don’t do that. Ebola has killed 5,000 people since June 2014. The 14 kills up to 500,000 people each year. 15 kills up to one million each year. 3,000 people every single day,ten children since this video started. So even if Ebola is terrible and scary, don’t let yourself be scared.
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【判断题】只有当入射光频率高于红限频率时,光电效应才能够产生。
A.
正确
B.
错误
【单选题】下列选项中,不属于Struts2常量配置方式之一的是( )
A.
在struts.xml文件中使用 元素配置常量
B.
在struts.properties文件中配置常量
C.
在Action类中通过定义并配置常量
D.
在web.xml文件中通过 元素配置常量
【简答题】溴酸钾法测定异烟肼含量,求滴定度 T ? 异烟肼: M ( C 6 H 7 N 3 O ) =137.14 溴酸钾滴定液: 0.01667mol/L 滴定反应式: 3C 6 H 8 N 3 O + 2KBrO 3 ——→ 3C 6 H 5 NO 2 + 3N 2 ↑ + 2KBr + 3H 2 O
【单选题】将 一个图层锁定后,则下列说法不正确的是( )
A.
该图层可能被移动
B.
该图层可能被擦拭
C.
该图层不可能被删除
D.
该图层可能被合并
【单选题】电子商务数据库面临的威胁中____是最主要的威胁
A.
黑客的攻击
B.
病毒的攻击
C.
网络环境的脆弱性
D.
应用系统的不安全性
【单选题】消化性溃疡最主要的临床表现是:
A.
恶心呕吐
B.
嗳气不适
C.
节律性上腹痛
D.
神经官能症症状
E.
反酸明显
【单选题】下列选项中,不属于Struts2常量配置方式之一的是( )
A.
在struts.xml文件中使用元素配置常量
B.
在struts.properties文件中配置常量
C.
在Action类中通过定义并配置常量
D.
在web.xml文件中通过元素配置常量
【多选题】本模块推荐了以下哪些用词技巧?
A.
避免口语化
B.
使用高级句型、词汇
C.
人称一致 / 主谓一致
D.
避免中式英语
【判断题】只有当入射光频率高于红限频率时,光电效应才能够产生。
A.
正确
B.
错误
【单选题】将一个图层锁定后,则下列说法不正确的是( )
A.
该图层可能被移动
B.
该图层可能被檫拭
C.
该图层不可能被删除
D.
该图层可能被合并
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