what does“jump to the rescue” mean? Scientists jumped to the rescue with some distinctly shaky evidence to the effect that insects would eat usup if birds failed to control them.

“irony” and “satire” what's the difference between “irony” and “satire”

what's the difference between“envy” and “be jealous of”? what's the difference between“envy” and “be jealous of”? which one just means “I want to be like you”? which one means “you get what I want and I hate it”?

what does “I like you” exactly mean? a man says “I like you" to a woman. Does it mean”I like you as a friend“? or“I have feelings for you”? And what's the difference between “I have feelings for you” and “I have a crush on you”?

What's the difference between “safety” and “security”? What's the difference between “safety” and “security”?

About “swallowing sound” in English pronounce I know we should use swallowing sound(Is that called so?) when speaking words such as "garden" "burden" "mountain". But what's the specific rule? Can we swallow when saying "certain" " what about "didn't" the “n”? Do Americans use it more frequently？Or Britisher？

Cooperation It's not hard to tell there are two physical disabled persons in the picture given above, each of whom has lost one of thier legs. To our surprise, they discard their crutches which are absolutely crucial to them and hold the other's shouder. Their broken legs are tied together so they can go ahead just like a normal person. They can go anywhere they want with their combined legs, as the caption says. The picture vividely indicates that disabled people can also possess incredibly capability with team cooperation. It can be illustrated by a dance show I have seen, which was performed by a single-legged boy and a single-armed girl. Their beautiful dance is more like a touching miracle. As far as I concern, cooperation is an essential element of success. With cooperation, not only can disabled people make disability into ability, but also normal people can change disadvantages into advantages. In the contrary, without cooperation, even a perfectly excellent person cannot accomplish much in the inter-dependent society we now live in. Moreover, the cooperation spirit should be applied in international common developement to achieve the win-win goal in various fields. Nor a single person or a country can keep making progess without absorbing complementary advantages from others.

How to get rid of stutter problem? I know it's actually not a language question but a psychological one. I will go for an English interview （in December）which is really important to me. I have stutter since I was 7. I don't stutter in daily life. But when faced with a lot of people in some formal situation, I get nervous, then stutter. I need somebody tell me how practice and get over it. PS：I started to read English articles loudly everyday.

Self-Confidence Is Indispensable As can be seen, obviously, There're two soccer players making the game reach its climax. In the attacker's mind, the goalkeeper is imaged incredibly huge, while the goalkeeper envinsions himself a tiny person in front of a relatively enormous goal. Both of them do not believe they can succeed. A generally phenomenon is feflected by the brief cartoon above, revealing that some people usually lose their confidence, especially when doing radical challenges. They can't help drawing a picture of assumptive consequences, which are totally worse than the real situation. Lack of confidence can easily break one't willpower to succeed. In contast, unshakable self-confidence brings a ladder to truimph. A number of instances can be used to exemplify my viewpoint. First of all, despite the fierce competition, students believing in themselves often excel in exams. Furthermore, plenty of famous athletes wasn't stopped by their shorts figures, becoming legends in The Olympic Games.