Đề cương số 2 AVB

The "greenhouse effect" is the warming that happens when certain gases in Earth's atmosphere _____(15)_____ heat.

• 
  grasp

• trap

• seize

• capture

These gases let in light but keep heat from escaping, like the glass walls of a greenhouse. First, sunlight shines onto the Earth's surface, _____(16)_____ it is absorbed and then radiates back into the atmosphere as heat.

• which

• that

• who

• where

In the atmosphere, greenhouse gases trap some of this heat, and the rest escapes into space. The more greenhouse gases are in the atmosphere, the more heat gets trapped.
Scientists have known about the greenhouse effect since 1824, when Joseph Fourier calculated that the Earth would be much colder if it had no atmosphere. This greenhouse effect is what keeps the Earth's climate _____(17)_____.

• habitat

• habitable

• habitation

• inhabit

Without it, the Earth's surface would be an average of about 60 degrees Fahrenheit cooler.
Scientists often use the term "climate change" instead of global warming. This is because as the Earth's average temperature climbs, winds and ocean currents move heat around the globe in ways that can cool some areas, warm _____(18)_____,

• others

• the other

• another

• other

and change the amount of rain and snow falling. _____(19)_____, the climate changes differently in different areas.

• However

• On the contrary

• In addition

• As a result

He decides to buy a new house, open a bookshop, and upgrading the garage next month.

• next month

• upgrading

• decides to buy

• open

A basic knowledge of social studies, such as history and geography, are considered a basic part of the education of every child.

• are

• child

• history

• basic

This is the largest and most comprehensible study ever made of the city's public transportation system.

• study

• made

• transportation

• comprehensible

Many futurists believe that in the near future __________ technology will make many currently impossible things a reality.

• existing

• outdated

• advanced

• troublesome

A(n) __________ is a type of organism that is threatened by extinction.

• extinct species

• endangered species

• living species

• rare species