[单项选择](Mind you), under no circumstances (you are) to allow your (child) to change (broken) bulbs by himself.
A. Mind you
B. you are
C. child
D. broken

[单项选择](Mind you), under no circumstances (you are) to allow your (child) to change (broken) bulbs by himself.
A. Mind you
B. you are
C. child
D. broken

[单项选择]Only under special circumstances freshmen are permitted to take make-up test.


A. under
B. circumstances
C. freshmen are
D. to take

[单项选择]Under what circumstances shall the Customs lift the seal affixed to the account books, documents and relevant data without delay
A. Falsifying relevant account books, documents where any possibility is detected of .transferring
B. Upon clearance of a case
C. Upon completion of collecting necessary evidence
D. Both B and C

[单项选择]Under no circumstances we shall stop the research we've begun.

[单项选择]Under what circumstances is ground transport to the airport free
A. If the transport is between a town and the airport.
B. If a passenger wants to catch a plane.
C. If a passenger has just finished the air trip.
D. If a passenger is at town terminal.

[单项选择]

Text 3
Under certain circumstances, the human body must cope with gases at greater-than-normal atmospheric pressure. For example, gas pressures increase rapidly during a dive made with scuba gear because the breathing equipment allows divers to stay underwater longer and dive deeper.
The pressure exerted on the human body increases by 1 atmosphere for every 10 meters of depth in seawater, so that at 30 meters in seawater a diver is exposed to a pressure of about 4 atmospheres. The pressure of the gases being breathed must equal the external pressure applied to the body, otherwise breathing is very difficult. Therefore all of the gases in the air breathed by a scuba diver at 40 meters are present at five times their usual pressure. Nitrogen, which composes 80 per cent of the air we breathe, usually causes a balmy feeling of well-being at this pressure. At a depth of 5 atmospheres, nitrogen causes symptoms resembling alcohol intoxication, known as nitrogen na
A. It forms bubbles.
B. It goes directly to the brain.
C. It is reabsorbed by the lungs.
D. It has a narcotic effect.

[单项选择]Under no circumstances（）anything that will benefit ourselves but harm the interests of the state.
A. we should do
B. should we do
C. we did
D. did we do

[单项选择]Under no circumstances （） leave his post.
A. a soldier mustn't
B. a solider must
C. mustn't a soldier
D. must a solider

[单项选择]Mind you. It's easy to have your pocket ______ in a big crowd.
A. pick
B. picking
C. picked
D. being picked

[单项选择]We have been told that under no circumstances we can use the telephone in the office for personal affairs.（）
A. did we use
B. may we use
C. we may use
D. we could use