【单选题】A condenser is a heat exchanger （） steam or vapor loses heat and returns to liquid form.
A. what
B. in which
C. in whose
D. that
A. what
B. in which
C. in whose
D. that
【单选题】 There are about 350 species and subspecies of birds in danger of become extinct, with a large number of them, 117 in all, found on oceanic islands.
【单选题】Listening 1 "Professor’s Office"
{$mediaurl} Why does the man go to see his professor
A、To borrow some books for his project
B、To hand in the first book report
C、To ask about the professor’s requirements
D、To talk about literary movements
{$mediaurl} Why does the man go to see his professor
A、To borrow some books for his project
B、To hand in the first book report
C、To ask about the professor’s requirements
D、To talk about literary movements
【单选题】 The word "yet" in line 16 is closest in meaning to
A．( however
B．( since
C．( generally
D．( so far
A．( however
B．( since
C．( generally
D．( so far
【单选题】 It can be inferred from the passage that brain size is assumed to
A．( be an indicator of cognitive ability
B．( vary among individuals within a species
C．( be related to food consumption
D．( correspond to levels of activity
A．( be an indicator of cognitive ability
B．( vary among individuals within a species
C．( be related to food consumption
D．( correspond to levels of activity
【单选题】 The word "confine" in line 17 is closest in meaning to
A．( adapt
B．( train
C．( restrict
D．( organize
A．( adapt
B．( train
C．( restrict
D．( organize
【单选题】 According to the passage, why is the Lake Wales Ridge valuable
A．( It was originally submerged in the ocean
B．( It is less than ten miles wide
C．( It is located near the seashore
D．( It has ecosystems that have long remained unchanged
A．( It was originally submerged in the ocean
B．( It is less than ten miles wide
C．( It is located near the seashore
D．( It has ecosystems that have long remained unchanged
【单选题】
{$mediaurl} Listen again to part of the conversation. Then answer the question.
Why does the student say this:
A．To express her fear of very deep water
B．To explain why she likes the color of the ocean
C．To change the topic of the conversation
D．To check her understanding of what the tutor said
{$mediaurl} Listen again to part of the conversation. Then answer the question.
Why does the student say this:
A．To express her fear of very deep water
B．To explain why she likes the color of the ocean
C．To change the topic of the conversation
D．To check her understanding of what the tutor said
【单选题】 The passage mentions which of the following asa result of improvements in factory machinery
A．(It become easier for factory' owners to find workers and customers
B．(Manufacturers had to employ more highly skilled workers
C．(The amount of power required for factories operate was reduced
D．(Factories could operate more than one engin at a time
A．(It become easier for factory' owners to find workers and customers
B．(Manufacturers had to employ more highly skilled workers
C．(The amount of power required for factories operate was reduced
D．(Factories could operate more than one engin at a time
【单选题】 Basalt, (which )composes (most) of the ocean (floor), is a dark-grey rock (rich )in iron and magnesium than most surface rocks.
A．which
B．most
C．floor
D．rich
A．which
B．most
C．floor
D．rich
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