If a increase in income decreases the demand for a good, then the good is a(n)
A.substitute good.
B.complementary good.
C.normal good.
D.inferior good.
- · 有3位网友选择 B,占比30%
- · 有3位网友选择 A,占比30%
- · 有2位网友选择 C,占比20%
- · 有2位网友选择 D,占比20%
A.substitute good.
B.complementary good.
C.normal good.
D.inferior good.
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1、A good teacher ______.
A、knows how to hold the interest of his students
B、must have a good voice
C、knows how to act on the stage
D、stands or sits motionless while teaching
2、In what way is a teacher''s work different from an actor''s? ( )
A、The teacher must learn everything by heart.
B、He knows how to control his voice better than an actor.
C、he has to deal with unexpected situations.
D、 He has to use more facial expressions.
3、The main difference between students in class and theatre audience is that ( ).
A、students can move around in the classroom
B、students must keep silent while theatre audience
C、no memory work is needed for the students
D、the students must take part in their teachers' plays
【填空题】Troubleshooting Engineer 1: Hey, Amy. Were you able to complete that systems test? Engineer 2: I was actually just making a report on the results. Engineer 1: Great. So what were you looking at? Engineer 2: A few people complained that their (1) were slow. So I used several metrics to test both the speed and capacity of the (2). Engineer 1: What metrics did you use? Engineer 2: I started with the central (3) unit. I tested it for execution time and throughput. Engineer 1: Good thinking. What did you find? Engineer 2: Well, there's good news and bad news. Engineer 1: What's the good news? Engineer 2: The throughput is still fairly high. The computer still processes large amounts of (4) in a short amount of time. Engineer 1: Well, that is good. We need the computers to process instructions quickly. Engineer 2: However, there were some disappointing areas of (5). Engineer 1: I thought there might be. Engineer 2: Yes. I found that the system CPU time slowed down significantly. Engineer 1: The background system must not be functioning properly. Engineer 2: That's what it looks like. I'm recommending further diagnostic tests.
A、an increase in the price of mp3 players
B、a decrease in the number of sellers of mp3 players
C、an increase in the price of plastic, an input into the production of mp3 players
D、an improvement in the technology used to produce mp3 players
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