| Only three strategies are available for
controlling cancer: prevention, screening and treatment. Lung cancer causes more
deaths than any other types of cancer. A major cause of the disease is not
{{U}} (21) {{/U}} known; there is no good evidence that screening is much
helpful, and treatment {{U}} (22) {{/U}} in about 90 percent of all
cases. At present, therefore, the main strategy must be {{U}} (23) {{/U}}
. This may not always be true, of course, as for some other types of cancer,
research {{U}} (24) {{/U}} the past few decades has produced (or
suggested) some importance in prevention, screening or treatment. {{U}} (25) {{/U}}, however, we consider not what research may one day offer but what today’s knowledge could already deliver th A. dealing B. expending C. hardening D. inspecting 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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