| 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 an A. possible B. impossible C. likely D. unlikely 更多"Read the following text. Choose the"的相关试题: [单项选择] Read the following text. Choose the best word for or phrase each numbered blank and mark A, B, Cot D on ANSWER SHEET 1.
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