Americans are ____ together like never before.A、meltingB、melted

Once you get into a bad habit, you’ll find it hard toget out of it. (英译汉)

Each program module is compiled separately and the resulting _______ files are linked together to make an executable application．

A．assembler

B．source

C．1ibrary

D．Object

I got . _____very late this morning. I watched too much TV last night.

A. in

B. up

C. together

A.Multicast addresses 224.0.0.13 and 224.0.0.22 are reserved link - local addresses used by PIMv2 and IGMPv3

B.Because they would map to overlapping IP multicast MAC addresses, multicast addresses 224.0.1.1 and 238.1.1.1 could not be used toget her

C.Multicast addresses 224.0.0.0 through 224.0.0.255 are always forwarded because they are transmitted with Time to Live (TTL) greater than 1

D.Multicast addresses 224.0.0.5 and 224.0.0.6 are source multicast addresses for OSPF routers

E.The a dministratively scoped multicast addresses 239.0.0.0 through 239.255.255.255 are similar in purpose to RFC 1918 private unicast addresses

F.Multicast address 224.0.1.1 has been reserved for the Network Time Protocol (NTP) by the IANA

根据以下材料回答题

Driving cars, trucks and motorcycles is an important part of our lives．We do it every day toget to work, to school or to friends&39; houses．

Driving can be very convenient, but can also cause many problems．Waiting in line at a redlight, a driver may get impatient and decide just to drive right through it．If another car is comingfrom the other direction, there might be a terrible accident．Cutting another car off can make itsdriver angry, so that driver cuts off someone else．Pretty soon everybody is angry, and impatient．

Traffic accidents decline millions of lives every year worldwide．In Taiwan alone, over sevenpeople are killed in accidents every day．The annual death rate (年死亡率) from traffic accidentsin Taiwan is twice that of Japan．

To allow traffic to move smoothly and safely, everybody must follow the rules．Before youdrive, learn all the traffic laws．That way of driving is safe, convenient and even fun !

The word "convenient" in the passage means __________． 查看材料

A.handy， easy to do

B.that can be changed

C.fond of drinking and merry-making

D.carriages or other trucks

Americans are more polychronic than Chinese.()

Today there are about seven ______ Americans in colleges and universities

A.millions

B.million

C.millions of

D.million of

A.Spanish

B.English

C.Mexican

D.Latin

A.Germans

B.Frenchmen

C.Americans

D.Chinese