请根据下面括号中的意思填写词语。

①在他____(病危将逝世的时候)，一边有同时代人和后代的欢呼和赞美，另一边有对他怀有深仇大恨的旧时代扬扬得意的嘘叫和仇恨。

②这批无恶不作的法官，他们____(讨好上司，欺侮下属)，俯伏于国王之前，凌驾于人民之上。

③做一个公民，我们要____(谨慎认真地做好本职工作)。

④让我们在这令人____(形容产生严肃敬仰的感情)的墓前鞠躬。

Dear John,

    How are you? Nice1 you. From your letter I know a lot about you and your school. Now let me2 something about me and my school.

    I am thirteen years old. I am 3 Class Two, Grade One. My father is a teacher. He is my 4English teacher. My mother is a doctor. I have a sister.5 are in the same school. We can sing(唱) many songs6 English.

    This is my classroom.7have a class photo on the wall. But can you see 8photo? It's at the door. In the classroom 9 our desks and chairs. Mrs. Green is our head teacher.10 is very kind(友好).

    Please come and have a look at our school if you are free.

Millie

网络信息良莠不齐。作为网络游客，我们要（　）

①提高自己的辨别觉察能力   ②提高自己的抗诱惑能力

③善于把自己伪装起来         ④绝不在网络上交朋友

如图所示，一物块置于水平地面上，当用与水平方向成30°角的力F₁拉物体向前运动，当改用与水平方向成30°角的力F₂推物块向前运动，若F₁和F₂的大小相等，则物块与地面之间的摩擦力大小f₁和f₂的关系为（   ）