AHe has finished the study of metformin.
BDrugs can treat aging, so aging itself is a disease.
CWe can affect mortality by preventing a composite of age-related diseases.
DAll of the above.
AFederal officials and conservationists held a demonstration.
BConservationists had an outdoor exhibition.
CKenya crushed more than 1 ton of ivory.
DConservation groups burned 105 tons of elephant tusks.
AA locksmith.
BA sugar plantation owner.
CA sugar plantation servant.
DA Haitian laborer.
ASand boarding.
BHiking.
CParagliding.
DSurfing.
A12,093,217.
B12,093,271.
C12,092,317.
D12,092,371.
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.
对
错
AThe high suicide rate in American is caused by its policy.
BThe rate of suicide is down from a global prospect.
CIn china, many young women commit suicide.
DAmerican economy has a bright future.
AA pond in the center.
BAroma of flowers.
CMoonlight.
DBirds’singing.
AIt is a top attraction to Florianopolis visitors.
BIt can be 40 degrees hot in summer.
CThe northern beaches are among the best surfing places.
DThe southern beaches are crowded with tourists.
APrivate jet riding.
BBus riding.
CCar riding.
DMotor-bike riding.
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