By the 1970s, Loewy had even designed postage stamps.（）

If you are not sure how much postage is for your letter, you can ______ .

A．go and buy stamps from the machine in the post office

B．get in touch with somebody you know in the post office

C．ask the man or the woman in the post office for help

D．buy the stamps at any window

Not only() many cars built in the 1970s ugly and poorly designed, they also became very unreliable after 4050 thousand miles.

A. was

B. are

C. were

Studies conducted during the 1970s on prents-children reltionship indicted tht ______.dolescence did not cuses

A．adolescence did not cause as much trouble as clinicians and theorists had stated

B．children’s aggressiveness and rebelliousness were growing

C．children-parents relationship was declining

D．teenagers became even more abhorrent of their parents

Which of the following was seen as a disadvantage of the postage stamp？

A．It had to be purchased by the sender in advance.

B．It increased the cost of mail delivery.

C．It was difficult to affix to letters.

D．It was easy to counterfeit.

A．adolescence did not cause as much trouble as clinicians and theorists had stated

B．children's aggressiveness and rebelliousness were growing

C．children-parents relationship was declining

D．teenagers became even more abhorrent of their parents

According to the passage, a postage stamp is worth $ 16 800 because______.

A．it was the fourth stamp printed for practical use

B．it was particularly designed for a dancing ball

C．there are few others of its kind and a misprint on it

D．it was made in 1847

Which of the following was seen as a disadvantage of the postage stamp？

A．It had to be purchased by the sender in advance.

B．It increased the cost of mail delivery.

C．It was difficult to affix to letters.

D．It was easy to counterfeit.

A．adolescence did not cause as much trouble as clinicians and theorists had stated

B．children's aggressiveness and rebelliousness were growing

C．children-parents relationship was declining

D．teenagers became even more abhorrent of their parents