Test 1

A river’s speed will ............... which animals and plants can survive in it

Answer explanation

dictate: to influence something or make it necessary

What are some different types of substrates mentioned in the audio?

Answer explanation

 Now on its journey from its source to the sea a river may pass over several different types of substrate: clay, sand

Substrate?

The layer of rock beneath it.

Clay, sandstone, chalk, soft or hard limestone et cetera

Many stretches of river have had to be ​ (a)   , dug out to ​ (b)   the deep ​ (c)   . This prevents the bottom of the river from developing ​ (d)   .

• deeply dredged
• maintain
• channel
• naturally
• canal
• naturaly
• deeply digged
• deeply drudged

Answer explanation

dredge: bring up or clear (something) from a river, harbor, or other area of water with a dredge

maintain: to keep in existence, or not allow to become less

What's more, smaller craft need water plants such as​ (a)   and​ (b)   to be removed.

• lilies reeds
• rushesrushes
• propellers
• craft

Answer explanation

lilies: hoa ly

reeds: (the hollow stem of) any of various types of tall, stiff plants like grasses growing together in groups near water

rushes: tall plants that grow near water

Explanation:

What's more smaller craft need water plants such as lilies reeds and rushes to be removed.

What’s more, fast motorboats create wash, the causes the ​ (a)   of the river bank, floods the ​ ​ (b)   of animals and ​ (c)   away wildlife.

• erosion
• nests
• washes
• habitat
• removal

Answer explanation

What’s more, fast motorboats create wash, the causes the erosion of the river bank, floods the nests of animals and washes away wildlife.

The commonest kinds of pollution are industrial and include sewage, chemicals and other waste created by industry, _____, and pesticides, litter, large amounts of hot water dense or _____ plant growth and finally slurry - that's animal waste.

• fertilizers

• trash

• contamination

• decaying

Answer explanation

The commonest kinds of pollution are industrial and include sewage, chemicals and other waste created by industry, fertilizers, and pesticides, litter, large amounts of hot water dense or decaying plant growth and finally slurry - that's animal waste.

You can tell a lot by the way members of a family ………. with each other.

• identify

• interact

• relative

• understand

Answer explanation

interact with sth/sb: giao tiếp với ai

The water supply of our home city has failed to ……………… average purity requirements.

• see

• meet

• own

• hold

Answer explanation

meet requirements: đáp ứng nhu cầu

Mr and Mrs Popatlal live at home with their aged parents, children and grandchildren. They are a typical example of a traditional ........................................ family.

• nuclear

• enlarged

• extended

• compact

Answer explanation

extended family: gia đình nhiều thế hệ

When toxic fumes began to drift toward our homes, we were told to ………………..

• evacuate

• suffer

• forecast

• raze

Answer explanation

evacuate (v): di tản, tản cư