4．What can we infer from the last paragraph?

A．A talking cat is quite popular among the elderly.

B．Feelings of sadness among the elderly are unavoidable.

C．Each family can afford such a cat in the future.

D．The feeling of being needed is vital to the elderly.

【答案】　D　推理判断题。根据最后一段最后两句In the end，they hope to create an exchange between the human and the cat in which the human feels the cat needs them. By doing so，the researchers hope they can even help prevent feelings of loneliness and sadness among elderly people. 可知，被需要的感觉是至关重要的。故选D。

B

(2019·郑州模拟)

Great women

When it comes to changing the world，these women have invented，researched and collected their way to a place in scientific history.

Hedy Lamarr

More widely known as a Hollywood star during the 1930s and 1940s，Hedy Lamarr(1914－2000)was much more than a pretty face. After her home country Austria was taken over by the Nazi，highly intelligent and fearless，Lamarr worked with scientist and inventor George Antheil to develop a secret communication system. Without her work，wireless(无线的)technology as we know it today would not exist. Today she is considered as the mother of Wi－Fi.

Ameenah Gurib－Fakim

Ameenah Gurib－Fakim was born in 1959 in Mauritius，the country for which she now serves as the first woman president. She is a scientist who has spent many hours researching the local plants of Mauritius and their values as medicine. She has held many high positions in the fields of both politics and science and was awarded(授予)the 2007 UNESCO Award for Women in Science.