英语在小学是必修课吗?necessary“必要的”。significant“重要的”,如:a significant decision重要的决定。obligatory“必须的,强制性的”,如:Attendance at school is obligatory.必须到校。difficult“困难的”。
第5题:
We are facing both promising opportunities and grave challenges.
A:hard
B:brave
C:severe
D:difficult
答案:C
解析:
我们既面临有希望的机遇,也面临严峻的挑战。hard“困难的”,如:This problem is so hard that it cannot be solved soon.这个问题非常困难,无法很快解决。brave“勇敢的”,如:Our brave soldiers fought day and night on the battlefield.我们勇敢的士兵日夜奋战在战场上。severe“严峻的”,如:This company is facing severe cash flow problems.该公司面临严峻的资金周转问题。difficult“困难的”,如:No matter how difficult it is, we shall overcome it.无论有多困难,我们都会克服的。只有severe意思上与grave最接近。