In most countries, grade retention has been banned or strongly discouraged. In the United States, grade retention can be used in kindergarten through twelfth grade, however, students in grades seven through twelve are usually only retained in the specific failed subject due to each subject having its own specific classroom rather than staying in one classroom with all subjects taught for the entire school day as it is in grades kindergarten through sixth grade. For example, in grades seven through twelve, a student can be promoted in a math class but retained in a language class. Single classroom grades kindergarten through sixth grade are confined to one room for the whole day, being taught all subjects in the same classroom usually by one teacher with the exception of art and gymnastics conducted in the art room and the gymnasium respectively. In these grades the student must generally fail or score well below the accepted level in most or all areas within the entire curriculum to be retained. The student will then again repeat the entire school year within a single classroom and repeating the same subject matter as the previous year.

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can u get held back in 7th grade?

A: yes

Conceptually, a hydraulic motor should be interchangeable with a hydraulic pump because it performs the opposite function - similar to the way a DC electric motor is theoretically interchangeable with a DC electrical generator. However, most hydraulic pumps cannot be used as hydraulic motors because they cannot be backdriven. Also, a hydraulic motor is usually designed for working pressure at both sides of the motor.

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can a hydraulic pump be used as a hydraulic motor?

A: no

Chicago's ''L'' provides 24-hour service on some portions of its network, being one of only five rapid transit systems in the United States to do so. The oldest sections of the Chicago ''L'' started operations in 1892, making it the second-oldest rapid transit system in the Americas, after New York City's elevated lines.

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does the chicago l run 24 hours a day?

A: yes

Rarely, a sharply tilted uterus is due to a disease such as endometriosis, an infection or prior surgery. Although this may make it more challenging for the sperm to reach the egg, conception can still occur. A tipped uterus will usually right itself during the 10th to 12th week of pregnancy. Rarely (1 in 3000 to 8000 pregnancies) a tipped uterus will cause painful and difficult urination, and can cause severe urinary retention. Treatment for this condition (called ''incarcerated uterus'') includes manual anteversion of the uterus, and usually requires intermittent or continuous catheter drainage of the bladder until the problem is rectified or spontaneously resolves by the natural enlargement of the uterus, which brings it out of the tipped position. In addition to manual anteversion and bladder drainage, treatment of urinary retention due to retroverted uterus can require the use of a pessary, or even surgery, but often is as simple as having the pregnant mother sleep on her stomach for a day or two, to allow the retroverted uterus to move forward.

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can a uterus change from retroverted to anteverted?

A:
yes