It is an excellent article!

Canada attracts thousands of immigrants, who come from all over the world.

>>> Canada attracts dozens of thousands of immigrants from all over the world.

newcomers’ native language are not English

>>> newcomers’ native language is not English

If newcomers can not overcome the critical communication barrier,

>>> If newcomers cannot overcome the critical communication barrier,

face many difficult situations.

>>> face many difficulties.

learning it becomes their primary goal.

>>> English learning becomes their primary goal.

Several ways of improving listening skills include:

>>> Ways of improving listening skills include:

listening to news from TV, radio;

>>> listening to news on TV, radio;

English speaker might find the spoken words difficult to comprehend.

>>> Native English speakers might find the spoken words difficult to comprehend.

At same time,

>>> At the same time,

The choice of reading materials is much multiple.

>>> The choice of reading materials is variously available.

Making notes is a very useful method

>>> Taking notes is a very useful method

bring pens and paper

>>> bring a pen and a notebook

keep tireless efforts,

>>> make tireless efforts,