：Keys should never be hidden around the house since thieves（ ）know where to find them．

A．virtually

B．unavoidably

C．reliably

D．invariably

[单选题]The crankcase cover should never be allowed to open for investigation when （）A . the engine stopsB . the engine is runningC . you repair the engineD . overhauling the engine

[单选题]Teenagers should never give any strangers ______.A． their mobile phone numbersB． their family addressC． their personal informationD． their parents’ names

[问答题]You should look around before you cross the street.

[单选题]I've just locked my keys in my room. What should I do now_________A.Sorry,

[单选题]The(71)is a combination of keys that allows the user to activate a program function without clicking a series of menus options.(71)A.shortcut-keyB．quick-keyC．fast-keyD．rapid-key

[单选题]"Hidden" Species May Be Surprisingly CommonC．ryptic species animals that appear identical but are genetically quite distant—may be much more widespread than previously thought. The findings could have major implications in areas ranging from biodiv

[单选题]Where are the adopted kids served by Hidden Valley from?A.Russia.B.India.C.

[试题]What are surrogate keys? Explain how the surrogate key pipeline works.什么是代理键？简述代理键替换管道如何工作。

[单选题]We looked everywhere for the keys, but they are nowhere______.A.to find B.t

[单选题]Tom [searched] hispockets looking for the keys.A.went onB. was afterC. went