Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50

Orchids are unique in having the most highly developed of all blossoms, in which the usual male and female reproductive organs are fused in a single structure called the column. The column is designed so that a single pollination will fertilize hundreds or thousands, and in some cases millions, of seeds, so microscopic and light they are easily carried by the breeze. Surrounding the column are three sepals and three petals, sometimes easily recognizable as such, often distorted into gorgeous, weird, but always functional shapes. The most noticeable of the petals is called the labellum, or lip. It is often dramatically marked as an unmistakable landing strip to attract the specific insect the orchid has chosen as its pollinator.

To lure their pollinators from afar, orchids use appropriately intriguing shapes, colors, and scents. At least 50 different aromatic compounds have been analyzed in the orchid family, each blended to attract one, or at most a few, species of insects or birds. Some orchids even change their scents to interest different insects at different times.

Once the right insect has been attracted, some orchids present all sorts of one-way obstacle courses to make sure it does not leave until pollen has been accurately placed or removed. By such ingenious adaptations to specific pollinators, orchids have avoided the hazards of rampant crossbreeding in the wild, assuring the survival of species as discrete identities. At the same time they have made themselves irresistible to collectors

The word "fused" in line 2 is closest in meaning to

A. combined

B. hidden

C. fertilized

D. produced

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 numbered blanks from 23 to 32.

Bonsai trees have always been a source of great fascination to people. They are perfect miniatures, grown in pots small enough to sit on a windowsill. You have to keep reminding yourself that these trees are (23) ___________ real and identical to their larger cousins in all respects except their size. Rather like other small and perfectly-formed artifacts, bonsai trees, (24) ___________ quite a high price in the marketplace and so it doesn‟t come as a great surprise to find that they also attract the attention of thieves. It seems that quite a flourishing business has (25) ___________, in which they are stolen from the homes of grower and collectors, then reported and trimmed by unscrupulous dealers, to be sold on, at good prices, to unsuspecting buyers.

One of Britain‟s top collectors of bonsai trees, Paul Widdington, believes that he has found a solution, however. After losing his life‟s work, (26) ___________ at £250,000, when burglars broke into his home one night, Paul decided to (27) ___________ the possibilities of electronically tagging the trees he bought as a replacement. This (28)___________ injecting a microchip the size of a (29) ___________ of rice intro trunk of each tree. Each chip is a laser-etched with information which is (30) ___________ in a central register held by the police. Paul is quite aware that this kind of datatagging doesn‟t prevent thieves from stealing the trees in the first (31) ___________, although it may increase the (32) ___________ of getting them back. So he‟s also installing a security alarm system, complete with infra-red detectors, in his home.

Điền vào ô số 24

A. command 

B. obtain 

C. expect 

D. charge