1 . Studies show that if workers have short but frequent breaks they will actually become much more ________.

A．precious

B．unique

C．productive

D．complicated

2 . 这部春节档电影明星云集，情节曲折，制作精良，实现了票房与口碑的双丰收。(release) （汉译英）

3 . I was ________ that so few people supported my advice.

A．essential

B．complicated

C．cruel

D．embarrassed

4 . With new technological tools at our fingertips, new art forms, such as digital paintings and videos, have been created, making the line between art and technology less ________.

A．available

B．distinct

C．complicated

D．practical

5 . Hurricane Katrina, which hit New Orleans in 2005, laid ______ America’s class divide, as better-off residents escaped the city while poor blacks suffered in the stinky sports arena.

A．raw

B．bare

C．complicated

D．racial

7 . The ________ snow on the top of the mountain will melt sooner or later because of the rising temperature.

A．temporary

B．permanent

C．intense

D．complicated

8 . The handful of foreign coins is often not _______ to buy much from the duty-free shop.

A．exceptional

B．sufficient

C．fascinated

D．complicated

9 . Try to stay away from ________ topics at the party. Otherwise you might get involved in some conflicts.

A．conventional

B．controversial

C．complicated

D．competitive

10 . Nowadays competition between the youth to enter the top universities is ________.

A．intense

B．complicated

C．remarkable

D．delicate