As soon as person gets "threshold pains", he should ______. A: telephone the doctor immediately B: first relieve the stress and tension which cause the pains C: wait to let the pains reach a certain point D: take pain-killer

People under a lot of ______ may experience headaches, minor pains and sleeping difficulties.

As the saying _______, no pains, no gains.() A: speaks B: states C: says D: goes

Theywere(pain)____awarethattheyhadlostthemoneyalready. A: painful B: painfully C: pain D: pains

Don't (对待) _______animals as our (食物)_______, (治疗)_______their pains for the common good.

Why does the author think many pains better than pleasures A: Some pleasures bring us pains. B: Pains are evil, but should not be avoided. C: After enduring difficulties, we can feel a greater pleasure. D: Pleasures are not good and natural.

Once in flight, the pilot must take pains to stick to the plan, otherwise getting lost is all too easy.

Successful are those who are willing to take ___ to work hard. A: time B: pains C: turns D: back

How many of them know the _____ taken by the staff in the aviation industry? A: effort B: suffering C: gains D: pains

The most common symptoms of influenza include: a high fever, (1) nose, (2) throat, muscle pains, headache, coughing, and feeling tired.