[单项选择]Some words are hard to ______ because they have many different uses.
A. express
B. explain
C. define
D. describe

[单项选择]Some words are hard to （） because they have many different uses.
A. express
B. explain
C. define
D. describe

[单项选择]Some researchers have undertaken some psychological studies which prove that many children develop fears of ______ dangers.
A. imagination
B. imaginary
C. imaginable
D. imaginative

[单项选择]Some hard plastics can be______ metals in manufacturing machine parts.
A. substituted for
B. taken the place of
C. replaced in
D. given way to

[单项选择]Some hard plastics can be ______ metals in manufacturing machine parts.


A. substituted for
B. taken the place of
C. replaced in
D. given way to

[单项选择]Some companies have introduced flexible working time with less emphasis on pressure ______.
A. than more on efficiency
B. but more efficiency
C. but more on efficiency
D. than more efficiency

[单项选择]

Some cities have planned their transportation systems for ear owners. That is what Los Angeles did. Los Angeles decided to build highways for cars rather than spending money on public transportation.
This decision was suitable for Los Angeles. The city grew outward instead of upward. Los Angeles never built many tall apartment buildings. Instead, people live in houses with gardens.
In Los Angeles, most people drive cars to work. And every car has to have a parking space. So many buildings where people work also have parking tots.
Los Angeles also became a city without a Central Business District (CBD). If a city has a CBD, crowds of people rush into it every day to work. If people drive to work, they need lots of road space.
So Los Angeles developed several business districts and built homes and other buildings in between the districts. This required more roads and parking spaces.
Some people defend this growth pattern. They say Los Angeles
A. in the city center
B. along the main roads
C. around business districts
D. within the business districts