The speed of communications today, as opposed to ______ , has greatly altered the manner in Which bu

According to the passage, shopping for most people ______.

A．is a flexible means of communicating

B．is not just a means to gaining an end

C．does not provide an alternative to physical enjoyment

D．provides a perfectly easy and efficient way of living

●The (75)is designed specifically as a security system for preventing unauthorized communications between one computer network and another computer network.

(75)A.firewall

B.protocol

C.hacker

D.virus

A.set aside

B.put away

C.make up

D.account for

Which of the following is NOT a feature of the ideal companion machine？

A．Active in communication.

B．Attractive in personality.

C．Enjoyable in performance.

D．Unpredictable in behavior.

which peoplemake a bad situation worse by blaming themselves. One January, I had to officiate at two funerals onsuccessive days for two elderly women in my communi

A、They lived out a natural life

B、They died of exhaustion after the long plane ride

C、They weren’t accustomed to the change in weather

D、They died due to lack of care by family members

Inside the computer, the operation system(of another software module called a data communication(71))must decide which program will get control next. Each program remember, is associated(72). a particular front -end port. If a program's data have not yet reached its front - end buffer, there is no point giving that program control. Thus the data communication monitor sends its own(73)signal to the front -end devices next port is polled. Note that the(74)computer speed. The computer never has to wait for a terminal or a communication line. Instead, it is the expressive front - end processor that waits for the slower system(75)to respond.

A．memory

B．control

C．monitor

D．charge

Look at that ______ car. It is moving in a high ______ .(speed)

The population ________ (increase) at an alarming speed for the past 20 years.

极低速控制.

A.Low speed control .

B.Inching control .

C.High speed control.

D.Slow speed control.

A、Low speed

B、High speed

C、Any speed

Your ship must {speed up}．

A.reduce speed

B.increase speed

C.change speed

D.stop engine