Explain the difference between the smart antennas array technology and the MIMO technology and make comparison between them.

Why does the professor mention fingerprints？

A．To demonstrate that blood types are different for individuals

B．To explain how most of the blood tests are performed

C．To explain why O blood is considered universal

D．To help students remember the different antigens

The author's purpose of writing the third paragraph is ______

A．to suggest several different use of the wire

B．to explain the importance of wire

C．to describe how the wire is made

D．to outline the difficulty of making the wire

A.culture

B.river

C.mountain

D.road

We will ______ on the weather and have the party outdoors.

A．take a chance

B．make a difference

C．play a part

D．have an advantage

Whether you go or not does not () .

A make a difference

B make difference

C make different

D make differences

A.areas

B.countries

C.religions

D.cultural backgrounds

It is stated directly in the passage that older people should ______.

A．be treated differently in different cultures

B．enjoy a similar lifestyle

C．be ignored as society changes

D．be valued by the younger generations

It is one thing to accuse a person of a certain crime, but ______.

A．proving it is different

B．how to give proof is no easy

C．when to prove it is difficult

D．to prove it is quite another matter

The author mentioned the tornado in Edmonton, Canada in order to ______.

A．explain different types of weather

B．show that tornadoes occur frequently in Canada

C．indicate the tornado are common in summer

D．give an example of a damaging storm