A.As long as she had revised her lesson, she could finish the test today.
B.Without revising her lesson yesterday, she could finish the test today.
C.If she had revised her lesson yesterday, she could finish the test today.
D.She wished she had revised her lesson yesterday, so she can't finish the test today.

A.Tập đoàn kinh tế
B.Doanh nghiệp tự thành lập
C.Doanh nghiệp Tư nhân
D.Trường Đại học, Cao đẳng

A.\(h = \dfrac{{a\sqrt 3 }}{2}\)
B.\(h = \dfrac{{a\sqrt 2 }}{2}\)
C.\(h = \dfrac{{a\sqrt 3 }}{3}\)
D.\(h = \dfrac{{a\sqrt 2 }}{3}\)

A.\(2\sqrt 3 \,\,\left( {cm} \right)\)
B.\(\sqrt {13} \,\,\left( {cm} \right)\)
C.\(\sqrt {14} \,\,\left( {cm} \right)\)
D.\(\sqrt {15} \,\,\left( {cm} \right)\)

A.Độ dài trung đoạn: \(\sqrt {14} \left( {cm} \right)\); Chiều cao: \(3\sqrt 2 \left( {cm} \right)\)
B.Độ dài trung đoạn: \(3\sqrt 2 \left( {cm} \right)\); Chiều cao: \(2\sqrt 2 \left( {cm} \right)\)
C.Độ dài trung đoạn: \(\sqrt {14} \left( {cm} \right)\); Chiều cao: \(2\sqrt 2 \left( {cm} \right)\)
D.Độ dài trung đoạn: \(\sqrt {15} \left( {cm} \right)\); Chiều cao: \(3\sqrt 2 \left( {cm} \right)\)

A.b) \(\dfrac{{a\sqrt 6 }}{3}\)
B.b) \(\dfrac{{a\sqrt 3 }}{3}\)
C.b) \(\dfrac{{a\sqrt 6 }}{6}\)
D.b) \(\dfrac{{a\sqrt 2 }}{2}\)

A.\(1\)
B.\(2\)
C.\(3\)
D.\(4\)

A.Đúng
B.Sai
C.
D.

A.Đúng
B.Sai
C.
D.

A.Đúng
B.Sai
C.
D.