What contributes most to the overfishing of sharks is ______,A．the sharks accidentally cap

The overfishing of sharks may result in______.

A．the abundance of sea grass habitat

B．the ruin of nursery for many marine species

C．the obvious increase of most marine species

D．the huge decline of the populations of their prey

The author argues that ______on account of current unlimited ownership and use of guns.

A．politicians are afraid of the pressure of N. R. A.

B．people"s life and safety are under serious threat

C．N. R. A. prevents the banning of assault weapons

D．the gun lobby eases their pressure on politicians

It seems that the National Rifle Association ______.

A．represents the interests of the firearms industry

B．opposes the sale of assault weapons to anyone

C．defends criminals" access to weapons justifiably

D．advocates the free trade in all kinds of weapons

According to the text, American public opinion disapproves of______.

A．compulsory registration of private weapons

B．the opposition to a ban on assault weapons

C．the public officials who remain undecided

D．the right of every citizen to own weapons

It is implied in the text that the White House ______.

A．intended to issue a new ban on formidable firearms

B．appeared indifferent to the expired ban on weapons

C．was indefinite about the ban on assault weapons

D．overlooked the constitutional right to own weapons

The author notes that the ban on assault weapons ______.

A．confronts with widespread opposition

B．has been very disturbing to Americans

C．will soon be renewed and strengthened

D．was approved by four former Presidents

We learn from the text that______.

A．good logic depends on good observation

B．animals may have logical thinking ability

C．animals" behavior. is based on praise training

D．dogs can make simple scientific investigation

It is implied in the text that some animals______.

A．have developed the ability to analyze and solve problems

B．can figure out what would happen after a frightening event

C．have limited ability to analyze what happens around them

D．understand the relationship between lightning and thunder

It seems that the authors dog______.

A．knows what follows a flash of lightning

B．hates the flash of lightning and thunder

C．is a spoiled pet afraid of leaving home

D．grew up in a comfortable environment

The author cites his dog to show that dogs______.

A．are dissimilar to parrots in many aspects

B．are likely to be frightened by loud sound

C．have much higher intelligence than birds

D．are animals with high native intelligence