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.

CHESS

Chess, often (23)______ to as the Royal Game, is the oldest of all board games which do not contain an element of chance.

The origins of chess are uncertain, (24)______ there are a number of legends regarding its invention. One story says that it was King Solomon who invented chess, another that it was the Greek god Hermes, and yet another that the Chinese mandarin Han-Sing was responsible for its creation. In fact, chess almost certainly originated in India in the sixth or seventh century AD. The game’s popularity then spread quickly through Persia (now known as Iran) and from there came to Europe. The first documented reference to chess in literature is in a Persian romance which was written about 600 AD.

It is (25)_______ the word ‘chess’ comes from ‘shah’, the Persian word for ‘king’ and that ‘checkmate’, the game’s winning (26)_______, comes from the phrase ‘shah mat’, (27)______ ‘the king is dead’.

The rules and pieces used in the game have undergone changes over the centuries. Modem chess owes much to the Spaniard Lopez de Segura, who in 1561 wrote the first book on how to play the game. In it, he introduced the concept of ‘castling’, which had not been part of the game until then.
Question 24:

A. despite

B. nevertheless

C. although

D. however

Để xà phòng hoá 10 kg chất béo (R-COO)₃C₃H₅ người ta đun chất béo với dung dịch chứa 1,37 kg NaOH. Lượng NaOH dư được trung hoà bởi 500 ml dung dịch HCl 1,0M. Khối lượng glixerol và xà phòng nguyên chất thu được lần lượt là

A. 1,035 kg glixerol và 11,225 kg xà phòng.

B. 1,050 kg glixerol và 10,315 kg xà phòng.

C. 1,035 kg glixerol và 10,315 kg xà phòng.

D. 1,050 kg glixerol và 11,225 kg xà phòng.