单选题 Read the following text. Choose the best word or phrase for
each numbered blank and mark A, B, C or D on ANSWER SHEET
1.
With Airbus's giant A380 airliner about in to take
to the skies, you might think planes could not get much bigger — and you would
be right. For a given design, it turns {{U}}(21) {{/U}}, there comes a
point where the wings become too heavy to generate {{U}}(22) {{/U}} lift
to carry their own weight. {{U}}(23) {{/U}} a new way of designing and
making materials could {{U}}(24) {{/U}} that problem. Two engineers
{{U}}(25) {{/U}} University College London have devised an innovative
way to customise and control the {{U}}(26) {{/U}} of a material
throughout its three-dimensional structure. In the
{{U}}(27) {{/U}} of a wing, this would make possible a material that is
dense, strong and load-bearing at one end, close to the fuselage, {{U}}(28)
{{/U}} the extremities could be made less dense, lighter and more
{{U}}(29) {{/U}}. It is like making bespoke materials, {{U}}(30)
{{/U}} you can customise the physical properties of every cubic millimetre
of a structure. The new technique combines existing
technologies in a(n) {{U}}(31) {{/U}} way. It starts by using
finite-element-analysis software, of the type commonly used by engineers,
{{U}}(32) {{/U}} a virtual prototype of the object. The software models
the stresses and strains that the object will need to {{U}}(33) {{/U}}
throughout its structure. Using this information it is then {{U}}(34)
{{/U}} to calculate the precise forces acting on millions of smaller
subsections of the structure. {{U}}(35) {{/U}} of these subsections is
{{U}}(36) {{/U}} treated as a separate object with its own set of forces
acting on it — and each subsection {{U}}(37) {{/U}} for a different
microstructure to absorb those local forces. Designing so many
microstructures manually {{U}}(38) {{/U}} be a huge task, so the
researchers apply an optimisation program, called a genetic algorithm,
{{U}}(39) {{/U}} This uses a process of randomization and
trial-and-error to search the vast number of possible microstructures to find
the most {{U}}(40) {{/U}} design for each subsection.
【答案解析】[考点解析] 本题的考点为动词短语搭配。get around为“避开”之意。其他选项：[A] find找到，[B] discover发现，[C] get over做完；均不符合题意。
【正确答案】
B
【答案解析】[考点解析] 本题的考点为介词的词义辨析。engineers at University大学工作的工程师。at表示“从事于”。其余选项搭配不当。
【正确答案】
A
【答案解析】[考点解析] 本题的考点为名词的近义辨析以及上下文搭配。the properties of a material材料的属性。property属性，性质；如：Many plants have medicinal properties.许多植物具有药性。其他选项[B] nature本性，性质；[C] qualities质量，品质；[D] characteristics特征，特性；都不符合题意。
【正确答案】
B
【答案解析】[考点解析] 本题的考点为名词的近义辨析。the case of a wing机翼的情况。其他选项：[A] sample样品，[C] condition条件状况，[D] situation情形状况；均不合题意。
【答案解析】[考点解析] 本题的考点为动词的搭配。call for需要，要求；如：to call for bid招标；The occasion calls for a cool head. 这种场合需要冷静的头脑。其他选项[A] asks for请求，[C] demands和[D] requires为及物动词，与for不能搭配。
【正确答案】
C
【答案解析】[考点解析] 本题的考点为情态动词。此处用would表示推测，一定会，该是，其他 选项：[A] is to表示安排、计划，[B] should应该，[D] has to不得不；都不符合题意。
【正确答案】
D
【答案解析】[考点解析] 本题考的是对副词及短语的辨析。根据上下文，此处需要instead代替，顶替；如：If there is no coal, oil can be used instead.如果没有煤，可以用石油来代替。其他选项：[A] in order[B] in place和[C] in spite; 均不合题意。
【正确答案】
C
【答案解析】[考点解析] 本题的考点是形容词的搭配及对上下文语境的正确理解。the most suitable design最合适的设计。其他选项：[A] perfect完美，[B] complete全部，[D] proper恰当；均不合题意，所以C为正确答案。