How many pounds of clothing and textiles do Americans throw away each year?

AEducation at the University of Havana.

BBooks of Karl Marx.

CConstant military coups.

DBatista’s repressive control.

ASand boarding.

BHiking.

CParagliding.

DSurfing.

AAsking employees to do extra work is illegal.

BEmployees should get double-pay for the extra work.

CEmployees should get double pay for work during the weekend.

DLabor law plays an important role in our working life.

ASome people are naturally sensitive to the bitterness of coffee.

BSome people are insensitive to the bitterness of coffee.

CPeople who are sensitive to the bitterness of coffee prefer coffee.

DPeople who are insensitive to the bitterness of coffee prefer coffee.

AThey are beginning to collapse.

BThey are falling down slowly but surely.

CThey are in the danger of collapse.

DThey are falling down faster than ever.

对

错

对

错

ATwice as much.

BTen times as much.

COne tenth.

DHalf.

AIvory which had been brought into the U.S. before 1978.

BAntiques made of ivory less than 100 years ago.

CLess than 200 grams of ivory used on musical instruments.

DIvory from elephants which died of natural causes.

AHeart attack.

BStroke.

CHypertension.

DKidney problems.