Đoạn thẳng MN = 5cm. Lấy điểm P nằm giữa hai điểm M và N sao cho PN = 3cm.

a) Tính độ dài đoạn MP.

b) Trên tia đối của tia PM lấy điểm E sao cho PE = 1cm. So sánh MP và EN.

Tìm các số tự nhiên x sao cho:

a) x ∈ B(12) và 20 ≤ x ≤ 50

b) x ∈ Ư(20) và x > 8.

c) x ⋮ 5 và 0 < x ≤ 40

d) 16 ⋮ x

e) x ∈ B(18) và 9 < x < 120

f) 6 ⋮ (x – 1)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 23 to 27.

     Welcome to the Netherlands, a tiny country that only extends, at its broadest, 312 km north to south, and 264 km east to west - (23) _________ the land area increases slightly each year as a result of continuous land reclamation and drainage. With a lot of heart and much to offer, ‘Holland,’ as it is (24) _________ known to most of us abroad - a name stemming from its once most prominent provinces - has more going on per kilometer than most countries, and more English-speaking natives. You’ll be impressed by its (25) _________ cities and charmed by its countryside and villages, full of contrasts. From the exciting variety on offer, you could choose a romantic canal boat tour in Amsterdam, a Royal Tour by coach in The Hague, or a hydrofoil tour around the biggest harbour in the world - Rotterdam. In season you could visit the dazzling bulb fields, enjoy a full day on a boat, or take a bike tour through the pancake-flat countryside spiced with windmills. The possibilities are countless and the nationwide tourist office is on hand to give you information and help you (26) _________reservations. You’ll have (27) _________language problems here, as the Dutch are true linguists and English is spoken here almost universally.

Điền vào ô số 27

A. few

B. a few

C. little

D. a little

Điền số thích hợp vào chỗ trống:

Một phép tính có số hạng thứ nhất là 12, số hạng thứ hai là 38

Tổng của hai số hạng đó là