94.Human beings must seek immediate solutions for problems leading to the rapid ___ of the earth's ozone layer.

Human beings must seek immediate solutions for problems leading to the rapid ___

[单选题]Now computers can work out problems( )than human beings.A.as fast asB.much

The increase in temperature of the earths atmosphere which is caused by the incr

The earths atmosphere makes ()observation of distant stars difficult.A. accurate

They are busy ___ for solutions to their current problems.（ ）A. seekingB. planni

This may seemstrange to you, since nearly 75％of the earths surface is covered wi

[单选题]It is often （ ）that human beings are naturally equipped to speak.A． said B. to say C. saying D. being said

Crop-growing skyscrapers By the year 2050, nearly 80% of the Earths population w

Human beings are social animals; therefore, we need friends and Im __________ ex

[单选题]All human beings have a comfortable选择A．llhumanbeingshaveacomfortablezoneregulatingthe______theykeepfromsomeonetheytalkwith.A．)distanceB)scopeC)rangeD)boundary