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【单选题】
下列( )是Java调试器，如果编译器返回程序代码的错误，可以用它对程序进行调试。A.
java.exe
B.
javadoc.exe
C.
jdb.exe
D.
javaprof.exe
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反馈参考答案：
举一反三
【简答题】A．He is living in an apartment in the city. B．He is helping his brother look for an apartment. C．He already found an apartment. D．lie is looking for an apartment with a girl.
【单选题】成人胸外按压的深度和频率为
A.
1～3cm，80～100次／分
B.
2．5～4cm，80～100次／分
C.
4～5cm，80～100次／分
D.
2．5～4cm，100次／分
E.
4～5cm，100次／分
【单选题】关于成人心肺复苏，下列说法错误的是()
A.
胸外按压频率至少100次/分
B.
胸外按压深度至少5cm
C.
按压间断时间不超过5S
D.
人工呼吸与胸外按压比例为2:30
E.
维持血氧饱和度在94%-98%
【单选题】Although he is always coming on time，he is used late for his class.
A.
to have students
B.
for students’ being
C.
to students’ being
D.
for students’ to be
【单选题】Why is Mr. Smith running in the street'?
A.
He is doing exercises.
B.
He is looking for his cap.
C.
He is looking for his cat.
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