实行按劳分配的直接原因是（）

If you visit Alaska, you can NOT see _____.

A.Northern Polar Light

B.glaciers

C.Surfers

D.caribou

arth’s ______.

A.equatorial area

B.polar regions

C.mid-latitudes

D.All of the above

In the polar regions, the dog mainly ______.

A．carried supplies

B．provided companionship

C．tracked prey

D．herded caribou(驯鹿)

The polar regions are generally covered with ice and snow.

A．areas

B．rocks

C．mountains

D．seas

don’—You must be surprisednd excited to see the film str here． —You’re right．________________．I don’t expect to see her here B．I didn’t expect to see her here C．Im expecting to see her here D．I expected to see her here

A．I don’t expect to see her here

B．I didn’t expect to see her here

C．I am expecting to see her here

D．I expected to see her here

You should have put the milk into the icebox, I expect it ______ undrinkable.

A．became

B．had become

C．has become

D．becomes

You should have put the yogurt into the fridge, I expect it ______ undrinkable by now.

A．became

B．had become

C．has become

D．becomes

You should have put the milk into the refrigerator, I expect it ______ bad by now.

A．went

B．had gone

C．has gone

D．goes

You should have put the milk in the icebox; I expect it ______ undrinkable by now.

A．became

B．had become

C．has become

D．becomes

You should have put the milk into the ice-box, I expect it ______ undrinkable by now.

A．became

B．had become

C．has become

D．becomes