更多"Nowadays, it's considered acceptabl"的相关试题:
[单项选择]Nowadays, it's considered acceptable for a couple to ______ the marriage if it can't bring them happiness.
A. hold out
B. hold up
C. break off
D. break up
[单项选择]The newspapers are full of _______ news nowadays such as war, crime, natural disasters and rising prices.
A. inspiring
B. depressing
C. exhausting
D. puzzling
[单项选择]Which of the following is NOT considered part of semantic change
A. Semantic broadening.
B. Compounding.
C. Semantic narrowing.
D. Semantic shift.
[单项选择]How can a child be considered to have learned to speak
A. He makes varied sounds.
B. He carefully considers each sound he makes.
C. He imitates people around him.
D. He makes only certain sounds naturally.
[单项选择]Last week the couple revisited the city （ ） they spent their first holiday.
A. in that
B. which
C. where
D. when
[单项选择]At the wedding of the couple, the bride's father compared their new life together to a railroad train on a long, unknown track and wished them a safe journey. What might this comment suggests
A. The father opposed the marriage and felt that it had little chance of succeeding.
B. The father favored the marriage because they two matched each other.
C. The father not only reminded the newlyweds of potential marriage difficulties but also of fered his encouragement to them.
D. The father was probably a retired engineer and lie was speaking from his professional experience.
[单项选择]George Orwell's （ ） is considered as an anti-utopian novel.
A. Animal Farm
B. Nineteen Eighty-Four
C. Down and Out in Paris
D. The Road to Wigan War
[单项选择]It is not considered （ ） to pick one's teeth in public.
A. respectful
B. respected
C. respectable
D. respective
[单项选择]Nowadays e-tailers have
A. developed their own unique sales system.
B. formed a viable sales channel themselves,
C. become a part of the whole retailing strategy.
D. established their own reasonable supermarket.
[单项选择]It is not considered ______ to pick one's teeth in public.
A. respectful
B. respected
C. respectable
D. respective
[单项选择]George Orwell's ______ is considered as an anti-utopian novel.
A. Animal Farm
B. Nineteen Eighty-Four
C. Down and Out in Paris
D. The Road to Wigan War
[单项选择] Radiocarbon Dating
Nowadays scientists can answer many questions about the past through a technique called radiocarbon (放射性碳), or carbon-14, dating. One key to understanding how and by something happened is to discover when it happened.
Radiocarbon dating was developed in the late 1940s by physicist Willard F. Libby at he University of Chicago. An atom of ordinary carbon, called carbon-12, has six protons(质子) and six neutrons (中子) in its nucleus(原子核). Carbon-14, or C-14, is a radioactive, unstable form of carbon that has two extra neutrons. It returns to a more stable form of carbon through a process called decay (衰减). This process involves the loss of he extra neutrons and energy from the nucleus.
In Libby’s radiocarbon dating technique, the weak radioactive emissions (放射) from this decay process are counted by instruments such as a radiation detector and counter. The decay rate is used to determine the proportion of C-14 atoms in the samp
A. Right
B. Wrong
C. Not mentioned
