The author does an assessment of all high-risk urban areas in the U.S.A.YB.NC.NG
The author does an assessment of all high-risk urban areas in the U.S.
A.Y
B.N
C.NG
The author does an assessment of all high-risk urban areas in the U.S.
A.Y
B.N
C.NG
What does the author mean by "better off" in Paragraph 3?
A.richer
B.wiser
C.happier
D.luckier
What does the author think about the genetic engineering of pine trees?
A.Time-consuming.
B.Worthwhile.
C.Significant.
D.Technically impossible.
What does the author say about the effect of nicotine on smokers?
A.It threatens their health.
B.It heightens their spirits.
C.It suppresses their appetite.
D.It slows down their metabolism.
What suggestion does the author make in order to grasp this opportunity?
A.Search for new energy sources.
B.Forbid motor transportation.
C.Accept a new life style.
D.Adopt a new form. of invention.
Why does the author object to classifying parenting as a personal choice?
A.It is regarded as a legal obligation.
B.It relies largely on social support.
C.It generates huge social benefits.
D.It is basically a social undertaking.